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Finding the Fourth Proportional to 5,552.84, 7,661.12 and 3,959.71

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Solution

The fourth proportional to 5,552.84, 7,661.12 and 3,959.71 is: 5,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,552.84 : 7,661.12 = 3,959.71 : x
  2. Step 2: Convert to fraction form
    5,552.84/7,661.12 = 3,959.71/x
  3. Step 3: Cross multiply
    5,552.84x = 7,661.12 × 3,959.71
  4. Step 4: Simplify right side
    5,552.84x = 30,335,774.52
  5. Step 5: Solve for x
    x = 30,335,774.52/5,552.84
  6. Step 6: Final answer
    x = 5,463.11

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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.