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Finding the Fourth Proportional to 10,310.70, 15,470.00 and 4,388.99

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Solution

The fourth proportional to 10,310.70, 15,470.00 and 4,388.99 is: 6,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,310.70 : 15,470.00 = 4,388.99 : x
  2. Step 2: Convert to fraction form
    10,310.70/15,470.00 = 4,388.99/x
  3. Step 3: Cross multiply
    10,310.70x = 15,470.00 × 4,388.99
  4. Step 4: Simplify right side
    10,310.70x = 67,897,653.36
  5. Step 5: Solve for x
    x = 67,897,653.36/10,310.70
  6. Step 6: Final answer
    x = 6,585.16

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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.