Home / 8,587.31-11,851.54-5,230.61

Finding the Fourth Proportional to 8,587.31, 11,851.54 and 5,230.61

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Solution

The fourth proportional to 8,587.31, 11,851.54 and 5,230.61 is: 7,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.31 : 11,851.54 = 5,230.61 : x
  2. Step 2: Convert to fraction form
    8,587.31/11,851.54 = 5,230.61/x
  3. Step 3: Cross multiply
    8,587.31x = 11,851.54 × 5,230.61
  4. Step 4: Simplify right side
    8,587.31x = 61,990,755.75
  5. Step 5: Solve for x
    x = 61,990,755.75/8,587.31
  6. Step 6: Final answer
    x = 7,218.88

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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.