Home / 5,315.85-7,971.30-1,617.24

Finding the Fourth Proportional to 5,315.85, 7,971.30 and 1,617.24

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Solution

The fourth proportional to 5,315.85, 7,971.30 and 1,617.24 is: 2,425.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.85 : 7,971.30 = 1,617.24 : x
  2. Step 2: Convert to fraction form
    5,315.85/7,971.30 = 1,617.24/x
  3. Step 3: Cross multiply
    5,315.85x = 7,971.30 × 1,617.24
  4. Step 4: Simplify right side
    5,315.85x = 12,891,505.21
  5. Step 5: Solve for x
    x = 12,891,505.21/5,315.85
  6. Step 6: Final answer
    x = 2,425.11

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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.