Home / 9,376.52-12,939.58-5,398.40

Finding the Fourth Proportional to 9,376.52, 12,939.58 and 5,398.40

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Solution

The fourth proportional to 9,376.52, 12,939.58 and 5,398.40 is: 7,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.52 : 12,939.58 = 5,398.40 : x
  2. Step 2: Convert to fraction form
    9,376.52/12,939.58 = 5,398.40/x
  3. Step 3: Cross multiply
    9,376.52x = 12,939.58 × 5,398.40
  4. Step 4: Simplify right side
    9,376.52x = 69,853,028.67
  5. Step 5: Solve for x
    x = 69,853,028.67/9,376.52
  6. Step 6: Final answer
    x = 7,449.78

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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.