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Finding the Fourth Proportional to 8,710.14, 12,015.45 and 5,353.71

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Solution

The fourth proportional to 8,710.14, 12,015.45 and 5,353.71 is: 7,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.14 : 12,015.45 = 5,353.71 : x
  2. Step 2: Convert to fraction form
    8,710.14/12,015.45 = 5,353.71/x
  3. Step 3: Cross multiply
    8,710.14x = 12,015.45 × 5,353.71
  4. Step 4: Simplify right side
    8,710.14x = 64,327,234.82
  5. Step 5: Solve for x
    x = 64,327,234.82/8,710.14
  6. Step 6: Final answer
    x = 7,385.33

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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.