Home / 5,211.68-7,820.40-2,613.92

Finding the Fourth Proportional to 5,211.68, 7,820.40 and 2,613.92

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Solution

The fourth proportional to 5,211.68, 7,820.40 and 2,613.92 is: 3,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.68 : 7,820.40 = 2,613.92 : x
  2. Step 2: Convert to fraction form
    5,211.68/7,820.40 = 2,613.92/x
  3. Step 3: Cross multiply
    5,211.68x = 7,820.40 × 2,613.92
  4. Step 4: Simplify right side
    5,211.68x = 20,441,899.97
  5. Step 5: Solve for x
    x = 20,441,899.97/5,211.68
  6. Step 6: Final answer
    x = 3,922.32

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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.