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Finding the Fourth Proportional to 8,551.50, 12,848.24 and 8,079.47

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Solution

The fourth proportional to 8,551.50, 12,848.24 and 8,079.47 is: 12,139.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.50 : 12,848.24 = 8,079.47 : x
  2. Step 2: Convert to fraction form
    8,551.50/12,848.24 = 8,079.47/x
  3. Step 3: Cross multiply
    8,551.50x = 12,848.24 × 8,079.47
  4. Step 4: Simplify right side
    8,551.50x = 103,806,969.63
  5. Step 5: Solve for x
    x = 103,806,969.63/8,551.50
  6. Step 6: Final answer
    x = 12,139.04

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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.