Home / 3,715.60-5,127.56-2,143.68

Finding the Fourth Proportional to 3,715.60, 5,127.56 and 2,143.68

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Solution

The fourth proportional to 3,715.60, 5,127.56 and 2,143.68 is: 2,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.60 : 5,127.56 = 2,143.68 : x
  2. Step 2: Convert to fraction form
    3,715.60/5,127.56 = 2,143.68/x
  3. Step 3: Cross multiply
    3,715.60x = 5,127.56 × 2,143.68
  4. Step 4: Simplify right side
    3,715.60x = 10,991,847.82
  5. Step 5: Solve for x
    x = 10,991,847.82/3,715.60
  6. Step 6: Final answer
    x = 2,958.30

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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.