Home / 9,382.20-12,947.28-5,190.36

Finding the Fourth Proportional to 9,382.20, 12,947.28 and 5,190.36

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Solution

The fourth proportional to 9,382.20, 12,947.28 and 5,190.36 is: 7,162.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,382.20 : 12,947.28 = 5,190.36 : x
  2. Step 2: Convert to fraction form
    9,382.20/12,947.28 = 5,190.36/x
  3. Step 3: Cross multiply
    9,382.20x = 12,947.28 × 5,190.36
  4. Step 4: Simplify right side
    9,382.20x = 67,201,044.22
  5. Step 5: Solve for x
    x = 67,201,044.22/9,382.20
  6. Step 6: Final answer
    x = 7,162.61

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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.