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Finding the Fourth Proportional to 8,878.60, 12,253.60 and 7,383.92

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Solution

The fourth proportional to 8,878.60, 12,253.60 and 7,383.92 is: 10,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.60 : 12,253.60 = 7,383.92 : x
  2. Step 2: Convert to fraction form
    8,878.60/12,253.60 = 7,383.92/x
  3. Step 3: Cross multiply
    8,878.60x = 12,253.60 × 7,383.92
  4. Step 4: Simplify right side
    8,878.60x = 90,479,602.11
  5. Step 5: Solve for x
    x = 90,479,602.11/8,878.60
  6. Step 6: Final answer
    x = 10,190.75

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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.