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Finding the Fourth Proportional to 8,788.58, 12,129.36 and 5,013.08

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Solution

The fourth proportional to 8,788.58, 12,129.36 and 5,013.08 is: 6,918.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.58 : 12,129.36 = 5,013.08 : x
  2. Step 2: Convert to fraction form
    8,788.58/12,129.36 = 5,013.08/x
  3. Step 3: Cross multiply
    8,788.58x = 12,129.36 × 5,013.08
  4. Step 4: Simplify right side
    8,788.58x = 60,805,452.03
  5. Step 5: Solve for x
    x = 60,805,452.03/8,788.58
  6. Step 6: Final answer
    x = 6,918.69

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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.