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Finding the Fourth Proportional to 8,775.20, 13,157.84 and 7,737.68

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Solution

The fourth proportional to 8,775.20, 13,157.84 and 7,737.68 is: 11,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.20 : 13,157.84 = 7,737.68 : x
  2. Step 2: Convert to fraction form
    8,775.20/13,157.84 = 7,737.68/x
  3. Step 3: Cross multiply
    8,775.20x = 13,157.84 × 7,737.68
  4. Step 4: Simplify right side
    8,775.20x = 101,811,155.41
  5. Step 5: Solve for x
    x = 101,811,155.41/8,775.20
  6. Step 6: Final answer
    x = 11,602.15

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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.