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Finding the Fourth Proportional to 10,605.62, 15,908.88 and 3,585.80

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Solution

The fourth proportional to 10,605.62, 15,908.88 and 3,585.80 is: 5,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.62 : 15,908.88 = 3,585.80 : x
  2. Step 2: Convert to fraction form
    10,605.62/15,908.88 = 3,585.80/x
  3. Step 3: Cross multiply
    10,605.62x = 15,908.88 × 3,585.80
  4. Step 4: Simplify right side
    10,605.62x = 57,046,061.90
  5. Step 5: Solve for x
    x = 57,046,061.90/10,605.62
  6. Step 6: Final answer
    x = 5,378.85

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1.5x scale

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.