Home / 9,261.20-12,781.28-5,281.48

Finding the Fourth Proportional to 9,261.20, 12,781.28 and 5,281.48

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Solution

The fourth proportional to 9,261.20, 12,781.28 and 5,281.48 is: 7,288.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.20 : 12,781.28 = 5,281.48 : x
  2. Step 2: Convert to fraction form
    9,261.20/12,781.28 = 5,281.48/x
  3. Step 3: Cross multiply
    9,261.20x = 12,781.28 × 5,281.48
  4. Step 4: Simplify right side
    9,261.20x = 67,504,074.69
  5. Step 5: Solve for x
    x = 67,504,074.69/9,261.20
  6. Step 6: Final answer
    x = 7,288.91

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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.