Home / 8,691.12-11,995.68-6,176.88

Finding the Fourth Proportional to 8,691.12, 11,995.68 and 6,176.88

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Solution

The fourth proportional to 8,691.12, 11,995.68 and 6,176.88 is: 8,525.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.12 : 11,995.68 = 6,176.88 : x
  2. Step 2: Convert to fraction form
    8,691.12/11,995.68 = 6,176.88/x
  3. Step 3: Cross multiply
    8,691.12x = 11,995.68 × 6,176.88
  4. Step 4: Simplify right side
    8,691.12x = 74,095,875.88
  5. Step 5: Solve for x
    x = 74,095,875.88/8,691.12
  6. Step 6: Final answer
    x = 8,525.47

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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.