Home / 5,627.81-7,766.38-3,143.81

Finding the Fourth Proportional to 5,627.81, 7,766.38 and 3,143.81

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Solution

The fourth proportional to 5,627.81, 7,766.38 and 3,143.81 is: 4,338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627.81 : 7,766.38 = 3,143.81 : x
  2. Step 2: Convert to fraction form
    5,627.81/7,766.38 = 3,143.81/x
  3. Step 3: Cross multiply
    5,627.81x = 7,766.38 × 3,143.81
  4. Step 4: Simplify right side
    5,627.81x = 24,416,046.45
  5. Step 5: Solve for x
    x = 24,416,046.45/5,627.81
  6. Step 6: Final answer
    x = 4,338.46

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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.