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Finding the Fourth Proportional to 8,758.86, 13,148.69 and 6,911.30

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Solution

The fourth proportional to 8,758.86, 13,148.69 and 6,911.30 is: 10,375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.86 : 13,148.69 = 6,911.30 : x
  2. Step 2: Convert to fraction form
    8,758.86/13,148.69 = 6,911.30/x
  3. Step 3: Cross multiply
    8,758.86x = 13,148.69 × 6,911.30
  4. Step 4: Simplify right side
    8,758.86x = 90,874,541.20
  5. Step 5: Solve for x
    x = 90,874,541.20/8,758.86
  6. Step 6: Final answer
    x = 10,375.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.