Home / 9,171.45-12,655.04-5,393.88

Finding the Fourth Proportional to 9,171.45, 12,655.04 and 5,393.88

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Solution

The fourth proportional to 9,171.45, 12,655.04 and 5,393.88 is: 7,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.45 : 12,655.04 = 5,393.88 : x
  2. Step 2: Convert to fraction form
    9,171.45/12,655.04 = 5,393.88/x
  3. Step 3: Cross multiply
    9,171.45x = 12,655.04 × 5,393.88
  4. Step 4: Simplify right side
    9,171.45x = 68,259,740.19
  5. Step 5: Solve for x
    x = 68,259,740.19/9,171.45
  6. Step 6: Final answer
    x = 7,442.63

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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.