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Finding the Fourth Proportional to 3,521.71, 5,282.14 and 924.85

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Solution

The fourth proportional to 3,521.71, 5,282.14 and 924.85 is: 1,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.71 : 5,282.14 = 924.85 : x
  2. Step 2: Convert to fraction form
    3,521.71/5,282.14 = 924.85/x
  3. Step 3: Cross multiply
    3,521.71x = 5,282.14 × 924.85
  4. Step 4: Simplify right side
    3,521.71x = 4,885,187.18
  5. Step 5: Solve for x
    x = 4,885,187.18/3,521.71
  6. Step 6: Final answer
    x = 1,387.16

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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.