Home / 9,382.12-12,947.90-5,403.16

Finding the Fourth Proportional to 9,382.12, 12,947.90 and 5,403.16

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Solution

The fourth proportional to 9,382.12, 12,947.90 and 5,403.16 is: 7,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,382.12 : 12,947.90 = 5,403.16 : x
  2. Step 2: Convert to fraction form
    9,382.12/12,947.90 = 5,403.16/x
  3. Step 3: Cross multiply
    9,382.12x = 12,947.90 × 5,403.16
  4. Step 4: Simplify right side
    9,382.12x = 69,959,575.36
  5. Step 5: Solve for x
    x = 69,959,575.36/9,382.12
  6. Step 6: Final answer
    x = 7,456.69

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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.