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Finding the Fourth Proportional to 5,561.39, 7,671.39 and 3,672.98

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Solution

The fourth proportional to 5,561.39, 7,671.39 and 3,672.98 is: 5,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,561.39 : 7,671.39 = 3,672.98 : x
  2. Step 2: Convert to fraction form
    5,561.39/7,671.39 = 3,672.98/x
  3. Step 3: Cross multiply
    5,561.39x = 7,671.39 × 3,672.98
  4. Step 4: Simplify right side
    5,561.39x = 28,176,859.95
  5. Step 5: Solve for x
    x = 28,176,859.95/5,561.39
  6. Step 6: Final answer
    x = 5,066.51

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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.