Home / 5,321.24-7,343.20-2,931.28

Finding the Fourth Proportional to 5,321.24, 7,343.20 and 2,931.28

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Solution

The fourth proportional to 5,321.24, 7,343.20 and 2,931.28 is: 4,045.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.24 : 7,343.20 = 2,931.28 : x
  2. Step 2: Convert to fraction form
    5,321.24/7,343.20 = 2,931.28/x
  3. Step 3: Cross multiply
    5,321.24x = 7,343.20 × 2,931.28
  4. Step 4: Simplify right side
    5,321.24x = 21,524,975.30
  5. Step 5: Solve for x
    x = 21,524,975.30/5,321.24
  6. Step 6: Final answer
    x = 4,045.11

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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.