Home / 2,520.75-3,477.51-1,680.63

Finding the Fourth Proportional to 2,520.75, 3,477.51 and 1,680.63

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Solution

The fourth proportional to 2,520.75, 3,477.51 and 1,680.63 is: 2,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.75 : 3,477.51 = 1,680.63 : x
  2. Step 2: Convert to fraction form
    2,520.75/3,477.51 = 1,680.63/x
  3. Step 3: Cross multiply
    2,520.75x = 3,477.51 × 1,680.63
  4. Step 4: Simplify right side
    2,520.75x = 5,844,407.63
  5. Step 5: Solve for x
    x = 5,844,407.63/2,520.75
  6. Step 6: Final answer
    x = 2,318.52

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Find fourth proportional to 1,260.38, 1,738.76 and 840.32
Half scale
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Double scale
Find fourth proportional to 2,521.75, 3,478.89 and 1,681.63
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.