Home / 9,359.20-12,918.18-5,380.75

Finding the Fourth Proportional to 9,359.20, 12,918.18 and 5,380.75

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Solution

The fourth proportional to 9,359.20, 12,918.18 and 5,380.75 is: 7,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.20 : 12,918.18 = 5,380.75 : x
  2. Step 2: Convert to fraction form
    9,359.20/12,918.18 = 5,380.75/x
  3. Step 3: Cross multiply
    9,359.20x = 12,918.18 × 5,380.75
  4. Step 4: Simplify right side
    9,359.20x = 69,509,497.04
  5. Step 5: Solve for x
    x = 69,509,497.04/9,359.20
  6. Step 6: Final answer
    x = 7,426.86

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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.