Home / 5,140.85-7,711.25-1,245.24

Finding the Fourth Proportional to 5,140.85, 7,711.25 and 1,245.24

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Solution

The fourth proportional to 5,140.85, 7,711.25 and 1,245.24 is: 1,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.85 : 7,711.25 = 1,245.24 : x
  2. Step 2: Convert to fraction form
    5,140.85/7,711.25 = 1,245.24/x
  3. Step 3: Cross multiply
    5,140.85x = 7,711.25 × 1,245.24
  4. Step 4: Simplify right side
    5,140.85x = 9,602,350.72
  5. Step 5: Solve for x
    x = 9,602,350.72/5,140.85
  6. Step 6: Final answer
    x = 1,867.85

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1.5x scale

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.