Home / 1,929.92-2,663.13-1,090.71

Finding the Fourth Proportional to 1,929.92, 2,663.13 and 1,090.71

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Solution

The fourth proportional to 1,929.92, 2,663.13 and 1,090.71 is: 1,505.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.92 : 2,663.13 = 1,090.71 : x
  2. Step 2: Convert to fraction form
    1,929.92/2,663.13 = 1,090.71/x
  3. Step 3: Cross multiply
    1,929.92x = 2,663.13 × 1,090.71
  4. Step 4: Simplify right side
    1,929.92x = 2,904,702.52
  5. Step 5: Solve for x
    x = 2,904,702.52/1,929.92
  6. Step 6: Final answer
    x = 1,505.09

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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.