Home / 5,100.12-7,037.74-2,861.68

Finding the Fourth Proportional to 5,100.12, 7,037.74 and 2,861.68

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Solution

The fourth proportional to 5,100.12, 7,037.74 and 2,861.68 is: 3,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.12 : 7,037.74 = 2,861.68 : x
  2. Step 2: Convert to fraction form
    5,100.12/7,037.74 = 2,861.68/x
  3. Step 3: Cross multiply
    5,100.12x = 7,037.74 × 2,861.68
  4. Step 4: Simplify right side
    5,100.12x = 20,139,759.80
  5. Step 5: Solve for x
    x = 20,139,759.80/5,100.12
  6. Step 6: Final answer
    x = 3,948.88

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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.