Home / 3,158.70-4,358.43-2,715.90

Finding the Fourth Proportional to 3,158.70, 4,358.43 and 2,715.90

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Solution

The fourth proportional to 3,158.70, 4,358.43 and 2,715.90 is: 3,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.70 : 4,358.43 = 2,715.90 : x
  2. Step 2: Convert to fraction form
    3,158.70/4,358.43 = 2,715.90/x
  3. Step 3: Cross multiply
    3,158.70x = 4,358.43 × 2,715.90
  4. Step 4: Simplify right side
    3,158.70x = 11,837,060.04
  5. Step 5: Solve for x
    x = 11,837,060.04/3,158.70
  6. Step 6: Final answer
    x = 3,747.45

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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.