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Finding the Fourth Proportional to 5,158.71, 7,737.71 and 2,561.67

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Solution

The fourth proportional to 5,158.71, 7,737.71 and 2,561.67 is: 3,842.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.71 : 7,737.71 = 2,561.67 : x
  2. Step 2: Convert to fraction form
    5,158.71/7,737.71 = 2,561.67/x
  3. Step 3: Cross multiply
    5,158.71x = 7,737.71 × 2,561.67
  4. Step 4: Simplify right side
    5,158.71x = 19,821,446.77
  5. Step 5: Solve for x
    x = 19,821,446.77/5,158.71
  6. Step 6: Final answer
    x = 3,842.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.