Home / 5,261.69-7,890.11-1,972.43

Finding the Fourth Proportional to 5,261.69, 7,890.11 and 1,972.43

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Solution

The fourth proportional to 5,261.69, 7,890.11 and 1,972.43 is: 2,957.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.69 : 7,890.11 = 1,972.43 : x
  2. Step 2: Convert to fraction form
    5,261.69/7,890.11 = 1,972.43/x
  3. Step 3: Cross multiply
    5,261.69x = 7,890.11 × 1,972.43
  4. Step 4: Simplify right side
    5,261.69x = 15,562,679.81
  5. Step 5: Solve for x
    x = 15,562,679.81/5,261.69
  6. Step 6: Final answer
    x = 2,957.73

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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.