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Finding the Fourth Proportional to 3,487.04, 5,230.55 and 889.97

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Solution

The fourth proportional to 3,487.04, 5,230.55 and 889.97 is: 1,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.04 : 5,230.55 = 889.97 : x
  2. Step 2: Convert to fraction form
    3,487.04/5,230.55 = 889.97/x
  3. Step 3: Cross multiply
    3,487.04x = 5,230.55 × 889.97
  4. Step 4: Simplify right side
    3,487.04x = 4,655,001.98
  5. Step 5: Solve for x
    x = 4,655,001.98/3,487.04
  6. Step 6: Final answer
    x = 1,334.95

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Similar ratio
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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.