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Finding the Fourth Proportional to 8,146.16, 12,199.28 and 7,357.28

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Solution

The fourth proportional to 8,146.16, 12,199.28 and 7,357.28 is: 11,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.16 : 12,199.28 = 7,357.28 : x
  2. Step 2: Convert to fraction form
    8,146.16/12,199.28 = 7,357.28/x
  3. Step 3: Cross multiply
    8,146.16x = 12,199.28 × 7,357.28
  4. Step 4: Simplify right side
    8,146.16x = 89,753,551.67
  5. Step 5: Solve for x
    x = 89,753,551.67/8,146.16
  6. Step 6: Final answer
    x = 11,017.90

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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.