Home / 8,158.64-11,252.52-7,215.44

Finding the Fourth Proportional to 8,158.64, 11,252.52 and 7,215.44

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Solution

The fourth proportional to 8,158.64, 11,252.52 and 7,215.44 is: 9,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.64 : 11,252.52 = 7,215.44 : x
  2. Step 2: Convert to fraction form
    8,158.64/11,252.52 = 7,215.44/x
  3. Step 3: Cross multiply
    8,158.64x = 11,252.52 × 7,215.44
  4. Step 4: Simplify right side
    8,158.64x = 81,191,882.91
  5. Step 5: Solve for x
    x = 81,191,882.91/8,158.64
  6. Step 6: Final answer
    x = 9,951.64

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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.