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Finding the Fourth Proportional to 8,775.32, 12,102.11 and 7,280.87

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Solution

The fourth proportional to 8,775.32, 12,102.11 and 7,280.87 is: 10,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.32 : 12,102.11 = 7,280.87 : x
  2. Step 2: Convert to fraction form
    8,775.32/12,102.11 = 7,280.87/x
  3. Step 3: Cross multiply
    8,775.32x = 12,102.11 × 7,280.87
  4. Step 4: Simplify right side
    8,775.32x = 88,113,792.72
  5. Step 5: Solve for x
    x = 88,113,792.72/8,775.32
  6. Step 6: Final answer
    x = 10,041.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.