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Finding the Fourth Proportional to 10,572.80, 15,860.57 and 3,549.80

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Solution

The fourth proportional to 10,572.80, 15,860.57 and 3,549.80 is: 5,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.80 : 15,860.57 = 3,549.80 : x
  2. Step 2: Convert to fraction form
    10,572.80/15,860.57 = 3,549.80/x
  3. Step 3: Cross multiply
    10,572.80x = 15,860.57 × 3,549.80
  4. Step 4: Simplify right side
    10,572.80x = 56,301,853.64
  5. Step 5: Solve for x
    x = 56,301,853.64/10,572.80
  6. Step 6: Final answer
    x = 5,325.16

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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.