Home / 9,195.96-12,691.38-5,420.32

Finding the Fourth Proportional to 9,195.96, 12,691.38 and 5,420.32

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Solution

The fourth proportional to 9,195.96, 12,691.38 and 5,420.32 is: 7,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,195.96 : 12,691.38 = 5,420.32 : x
  2. Step 2: Convert to fraction form
    9,195.96/12,691.38 = 5,420.32/x
  3. Step 3: Cross multiply
    9,195.96x = 12,691.38 × 5,420.32
  4. Step 4: Simplify right side
    9,195.96x = 68,791,340.84
  5. Step 5: Solve for x
    x = 68,791,340.84/9,195.96
  6. Step 6: Final answer
    x = 7,480.60

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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.