Home / 2,929.13-4,042.67-1,687.85

Finding the Fourth Proportional to 2,929.13, 4,042.67 and 1,687.85

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Solution

The fourth proportional to 2,929.13, 4,042.67 and 1,687.85 is: 2,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.13 : 4,042.67 = 1,687.85 : x
  2. Step 2: Convert to fraction form
    2,929.13/4,042.67 = 1,687.85/x
  3. Step 3: Cross multiply
    2,929.13x = 4,042.67 × 1,687.85
  4. Step 4: Simplify right side
    2,929.13x = 6,823,404.57
  5. Step 5: Solve for x
    x = 6,823,404.57/2,929.13
  6. Step 6: Final answer
    x = 2,329.50

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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.