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Finding the Fourth Proportional to 4,881.96, 6,737.16 and 2,891.76

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Solution

The fourth proportional to 4,881.96, 6,737.16 and 2,891.76 is: 3,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.96 : 6,737.16 = 2,891.76 : x
  2. Step 2: Convert to fraction form
    4,881.96/6,737.16 = 2,891.76/x
  3. Step 3: Cross multiply
    4,881.96x = 6,737.16 × 2,891.76
  4. Step 4: Simplify right side
    4,881.96x = 19,482,249.80
  5. Step 5: Solve for x
    x = 19,482,249.80/4,881.96
  6. Step 6: Final answer
    x = 3,990.66

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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.