Home / 9,171.80-12,657.13-5,395.12

Finding the Fourth Proportional to 9,171.80, 12,657.13 and 5,395.12

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Solution

The fourth proportional to 9,171.80, 12,657.13 and 5,395.12 is: 7,445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.80 : 12,657.13 = 5,395.12 : x
  2. Step 2: Convert to fraction form
    9,171.80/12,657.13 = 5,395.12/x
  3. Step 3: Cross multiply
    9,171.80x = 12,657.13 × 5,395.12
  4. Step 4: Simplify right side
    9,171.80x = 68,286,735.21
  5. Step 5: Solve for x
    x = 68,286,735.21/9,171.80
  6. Step 6: Final answer
    x = 7,445.29

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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.