Home / 5,209.28-7,818.60-2,613.68

Finding the Fourth Proportional to 5,209.28, 7,818.60 and 2,613.68

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Solution

The fourth proportional to 5,209.28, 7,818.60 and 2,613.68 is: 3,922.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.28 : 7,818.60 = 2,613.68 : x
  2. Step 2: Convert to fraction form
    5,209.28/7,818.60 = 2,613.68/x
  3. Step 3: Cross multiply
    5,209.28x = 7,818.60 × 2,613.68
  4. Step 4: Simplify right side
    5,209.28x = 20,435,318.45
  5. Step 5: Solve for x
    x = 20,435,318.45/5,209.28
  6. Step 6: Final answer
    x = 3,922.87

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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.