Home / 9,191.20-12,684.12-5,212.12

Finding the Fourth Proportional to 9,191.20, 12,684.12 and 5,212.12

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Solution

The fourth proportional to 9,191.20, 12,684.12 and 5,212.12 is: 7,192.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.20 : 12,684.12 = 5,212.12 : x
  2. Step 2: Convert to fraction form
    9,191.20/12,684.12 = 5,212.12/x
  3. Step 3: Cross multiply
    9,191.20x = 12,684.12 × 5,212.12
  4. Step 4: Simplify right side
    9,191.20x = 66,111,155.53
  5. Step 5: Solve for x
    x = 66,111,155.53/9,191.20
  6. Step 6: Final answer
    x = 7,192.88

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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.