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Finding the Fourth Proportional to 8,791.84, 12,130.32 and 5,253.76

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Solution

The fourth proportional to 8,791.84, 12,130.32 and 5,253.76 is: 7,248.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.84 : 12,130.32 = 5,253.76 : x
  2. Step 2: Convert to fraction form
    8,791.84/12,130.32 = 5,253.76/x
  3. Step 3: Cross multiply
    8,791.84x = 12,130.32 × 5,253.76
  4. Step 4: Simplify right side
    8,791.84x = 63,729,790.00
  5. Step 5: Solve for x
    x = 63,729,790.00/8,791.84
  6. Step 6: Final answer
    x = 7,248.74

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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.