Home / 5,747.40-7,934.58-3,861.72

Finding the Fourth Proportional to 5,747.40, 7,934.58 and 3,861.72

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Solution

The fourth proportional to 5,747.40, 7,934.58 and 3,861.72 is: 5,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,747.40 : 7,934.58 = 3,861.72 : x
  2. Step 2: Convert to fraction form
    5,747.40/7,934.58 = 3,861.72/x
  3. Step 3: Cross multiply
    5,747.40x = 7,934.58 × 3,861.72
  4. Step 4: Simplify right side
    5,747.40x = 30,641,126.28
  5. Step 5: Solve for x
    x = 30,641,126.28/5,747.40
  6. Step 6: Final answer
    x = 5,331.30

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1.5x scale

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.