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Finding the Fourth Proportional to 8,624, 11,900.56 and 5,086.40

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Solution

The fourth proportional to 8,624, 11,900.56 and 5,086.40 is: 7,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624 : 11,900.56 = 5,086.40 : x
  2. Step 2: Convert to fraction form
    8,624/11,900.56 = 5,086.40/x
  3. Step 3: Cross multiply
    8,624x = 11,900.56 × 5,086.40
  4. Step 4: Simplify right side
    8,624x = 60,531,008.38
  5. Step 5: Solve for x
    x = 60,531,008.38/8,624
  6. Step 6: Final answer
    x = 7,018.90

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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.