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Finding the Fourth Proportional to 8,788.38, 12,128.07 and 5,062.38

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Solution

The fourth proportional to 8,788.38, 12,128.07 and 5,062.38 is: 6,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.38 : 12,128.07 = 5,062.38 : x
  2. Step 2: Convert to fraction form
    8,788.38/12,128.07 = 5,062.38/x
  3. Step 3: Cross multiply
    8,788.38x = 12,128.07 × 5,062.38
  4. Step 4: Simplify right side
    8,788.38x = 61,396,838.37
  5. Step 5: Solve for x
    x = 61,396,838.37/8,788.38
  6. Step 6: Final answer
    x = 6,986.14

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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.