Home / 8,115.32-12,157.02-5,333.75

Finding the Fourth Proportional to 8,115.32, 12,157.02 and 5,333.75

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Solution

The fourth proportional to 8,115.32, 12,157.02 and 5,333.75 is: 7,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.32 : 12,157.02 = 5,333.75 : x
  2. Step 2: Convert to fraction form
    8,115.32/12,157.02 = 5,333.75/x
  3. Step 3: Cross multiply
    8,115.32x = 12,157.02 × 5,333.75
  4. Step 4: Simplify right side
    8,115.32x = 64,842,490.23
  5. Step 5: Solve for x
    x = 64,842,490.23/8,115.32
  6. Step 6: Final answer
    x = 7,990.13

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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.