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Finding the Fourth Proportional to 8,438.61, 12,657.96 and 5,535.30

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Solution

The fourth proportional to 8,438.61, 12,657.96 and 5,535.30 is: 8,302.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.61 : 12,657.96 = 5,535.30 : x
  2. Step 2: Convert to fraction form
    8,438.61/12,657.96 = 5,535.30/x
  3. Step 3: Cross multiply
    8,438.61x = 12,657.96 × 5,535.30
  4. Step 4: Simplify right side
    8,438.61x = 70,065,605.99
  5. Step 5: Solve for x
    x = 70,065,605.99/8,438.61
  6. Step 6: Final answer
    x = 8,302.98

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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.