Home / 8,329.91-12,490.72-2,781.35

Finding the Fourth Proportional to 8,329.91, 12,490.72 and 2,781.35

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Solution

The fourth proportional to 8,329.91, 12,490.72 and 2,781.35 is: 4,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.91 : 12,490.72 = 2,781.35 : x
  2. Step 2: Convert to fraction form
    8,329.91/12,490.72 = 2,781.35/x
  3. Step 3: Cross multiply
    8,329.91x = 12,490.72 × 2,781.35
  4. Step 4: Simplify right side
    8,329.91x = 34,741,064.07
  5. Step 5: Solve for x
    x = 34,741,064.07/8,329.91
  6. Step 6: Final answer
    x = 4,170.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.