Home / 5,315.05-7,972.50-2,391.29

Finding the Fourth Proportional to 5,315.05, 7,972.50 and 2,391.29

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Solution

The fourth proportional to 5,315.05, 7,972.50 and 2,391.29 is: 3,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.05 : 7,972.50 = 2,391.29 : x
  2. Step 2: Convert to fraction form
    5,315.05/7,972.50 = 2,391.29/x
  3. Step 3: Cross multiply
    5,315.05x = 7,972.50 × 2,391.29
  4. Step 4: Simplify right side
    5,315.05x = 19,064,519.66
  5. Step 5: Solve for x
    x = 19,064,519.66/5,315.05
  6. Step 6: Final answer
    x = 3,586.90

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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.