Home / 2,180.76-3,006.63-1,393.44

Finding the Fourth Proportional to 2,180.76, 3,006.63 and 1,393.44

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Solution

The fourth proportional to 2,180.76, 3,006.63 and 1,393.44 is: 1,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.76 : 3,006.63 = 1,393.44 : x
  2. Step 2: Convert to fraction form
    2,180.76/3,006.63 = 1,393.44/x
  3. Step 3: Cross multiply
    2,180.76x = 3,006.63 × 1,393.44
  4. Step 4: Simplify right side
    2,180.76x = 4,189,558.51
  5. Step 5: Solve for x
    x = 4,189,558.51/2,180.76
  6. Step 6: Final answer
    x = 1,921.15

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Half scale
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Double scale
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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.