Home / 5,251.77-7,871.18-2,911.68

Finding the Fourth Proportional to 5,251.77, 7,871.18 and 2,911.68

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Solution

The fourth proportional to 5,251.77, 7,871.18 and 2,911.68 is: 4,363.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.77 : 7,871.18 = 2,911.68 : x
  2. Step 2: Convert to fraction form
    5,251.77/7,871.18 = 2,911.68/x
  3. Step 3: Cross multiply
    5,251.77x = 7,871.18 × 2,911.68
  4. Step 4: Simplify right side
    5,251.77x = 22,918,342.82
  5. Step 5: Solve for x
    x = 22,918,342.82/5,251.77
  6. Step 6: Final answer
    x = 4,363.93

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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.