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Finding the Fourth Proportional to 7,125.86, 9,839.16 and 5,551.22

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Solution

The fourth proportional to 7,125.86, 9,839.16 and 5,551.22 is: 7,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.86 : 9,839.16 = 5,551.22 : x
  2. Step 2: Convert to fraction form
    7,125.86/9,839.16 = 5,551.22/x
  3. Step 3: Cross multiply
    7,125.86x = 9,839.16 × 5,551.22
  4. Step 4: Simplify right side
    7,125.86x = 54,619,341.78
  5. Step 5: Solve for x
    x = 54,619,341.78/7,125.86
  6. Step 6: Final answer
    x = 7,664.95

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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.