Home / 9,186.72-12,659.40-6,387.36

Finding the Fourth Proportional to 9,186.72, 12,659.40 and 6,387.36

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Solution

The fourth proportional to 9,186.72, 12,659.40 and 6,387.36 is: 8,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.72 : 12,659.40 = 6,387.36 : x
  2. Step 2: Convert to fraction form
    9,186.72/12,659.40 = 6,387.36/x
  3. Step 3: Cross multiply
    9,186.72x = 12,659.40 × 6,387.36
  4. Step 4: Simplify right side
    9,186.72x = 80,860,145.18
  5. Step 5: Solve for x
    x = 80,860,145.18/9,186.72
  6. Step 6: Final answer
    x = 8,801.85

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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.