Home / 9,380.40-12,944.88-5,605.20

Finding the Fourth Proportional to 9,380.40, 12,944.88 and 5,605.20

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Solution

The fourth proportional to 9,380.40, 12,944.88 and 5,605.20 is: 7,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,380.40 : 12,944.88 = 5,605.20 : x
  2. Step 2: Convert to fraction form
    9,380.40/12,944.88 = 5,605.20/x
  3. Step 3: Cross multiply
    9,380.40x = 12,944.88 × 5,605.20
  4. Step 4: Simplify right side
    9,380.40x = 72,558,641.38
  5. Step 5: Solve for x
    x = 72,558,641.38/9,380.40
  6. Step 6: Final answer
    x = 7,735.13

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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.