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Finding the Fourth Proportional to 8,878.64, 12,251.16 and 5,101.94

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Solution

The fourth proportional to 8,878.64, 12,251.16 and 5,101.94 is: 7,039.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.64 : 12,251.16 = 5,101.94 : x
  2. Step 2: Convert to fraction form
    8,878.64/12,251.16 = 5,101.94/x
  3. Step 3: Cross multiply
    8,878.64x = 12,251.16 × 5,101.94
  4. Step 4: Simplify right side
    8,878.64x = 62,504,683.25
  5. Step 5: Solve for x
    x = 62,504,683.25/8,878.64
  6. Step 6: Final answer
    x = 7,039.89

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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.