Home / 9,191.30-12,681.79-5,414.18

Finding the Fourth Proportional to 9,191.30, 12,681.79 and 5,414.18

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Solution

The fourth proportional to 9,191.30, 12,681.79 and 5,414.18 is: 7,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.30 : 12,681.79 = 5,414.18 : x
  2. Step 2: Convert to fraction form
    9,191.30/12,681.79 = 5,414.18/x
  3. Step 3: Cross multiply
    9,191.30x = 12,681.79 × 5,414.18
  4. Step 4: Simplify right side
    9,191.30x = 68,661,416.84
  5. Step 5: Solve for x
    x = 68,661,416.84/9,191.30
  6. Step 6: Final answer
    x = 7,470.27

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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.