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Finding the Fourth Proportional to 7,081.44, 9,781.56 and 5,392.56

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Solution

The fourth proportional to 7,081.44, 9,781.56 and 5,392.56 is: 7,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.44 : 9,781.56 = 5,392.56 : x
  2. Step 2: Convert to fraction form
    7,081.44/9,781.56 = 5,392.56/x
  3. Step 3: Cross multiply
    7,081.44x = 9,781.56 × 5,392.56
  4. Step 4: Simplify right side
    7,081.44x = 52,747,649.19
  5. Step 5: Solve for x
    x = 52,747,649.19/7,081.44
  6. Step 6: Final answer
    x = 7,448.72

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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.