Home / 5,311.68-7,961.28-2,386.56

Finding the Fourth Proportional to 5,311.68, 7,961.28 and 2,386.56

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Solution

The fourth proportional to 5,311.68, 7,961.28 and 2,386.56 is: 3,577.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.68 : 7,961.28 = 2,386.56 : x
  2. Step 2: Convert to fraction form
    5,311.68/7,961.28 = 2,386.56/x
  3. Step 3: Cross multiply
    5,311.68x = 7,961.28 × 2,386.56
  4. Step 4: Simplify right side
    5,311.68x = 19,000,072.40
  5. Step 5: Solve for x
    x = 19,000,072.40/5,311.68
  6. Step 6: Final answer
    x = 3,577.04

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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.