Home / 2,520.75-3,478.26-1,401.70

Finding the Fourth Proportional to 2,520.75, 3,478.26 and 1,401.70

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Solution

The fourth proportional to 2,520.75, 3,478.26 and 1,401.70 is: 1,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.75 : 3,478.26 = 1,401.70 : x
  2. Step 2: Convert to fraction form
    2,520.75/3,478.26 = 1,401.70/x
  3. Step 3: Cross multiply
    2,520.75x = 3,478.26 × 1,401.70
  4. Step 4: Simplify right side
    2,520.75x = 4,875,477.04
  5. Step 5: Solve for x
    x = 4,875,477.04/2,520.75
  6. Step 6: Final answer
    x = 1,934.14

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Half scale
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Double scale
Find fourth proportional to 2,521.75, 3,479.64 and 1,402.70
Similar ratio
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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.