Home / 1,929.91-2,663.30-1,090.65

Finding the Fourth Proportional to 1,929.91, 2,663.30 and 1,090.65

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Solution

The fourth proportional to 1,929.91, 2,663.30 and 1,090.65 is: 1,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.91 : 2,663.30 = 1,090.65 : x
  2. Step 2: Convert to fraction form
    1,929.91/2,663.30 = 1,090.65/x
  3. Step 3: Cross multiply
    1,929.91x = 2,663.30 × 1,090.65
  4. Step 4: Simplify right side
    1,929.91x = 2,904,722.69
  5. Step 5: Solve for x
    x = 2,904,722.69/1,929.91
  6. Step 6: Final answer
    x = 1,505.11

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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.