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Finding the Fourth Proportional to 8,805.84, 12,151.24 and 5,079.76

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Solution

The fourth proportional to 8,805.84, 12,151.24 and 5,079.76 is: 7,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.84 : 12,151.24 = 5,079.76 : x
  2. Step 2: Convert to fraction form
    8,805.84/12,151.24 = 5,079.76/x
  3. Step 3: Cross multiply
    8,805.84x = 12,151.24 × 5,079.76
  4. Step 4: Simplify right side
    8,805.84x = 61,725,382.90
  5. Step 5: Solve for x
    x = 61,725,382.90/8,805.84
  6. Step 6: Final answer
    x = 7,009.60

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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.