Home / 3,715.55-5,127.45-2,143.64

Finding the Fourth Proportional to 3,715.55, 5,127.45 and 2,143.64

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Solution

The fourth proportional to 3,715.55, 5,127.45 and 2,143.64 is: 2,958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.55 : 5,127.45 = 2,143.64 : x
  2. Step 2: Convert to fraction form
    3,715.55/5,127.45 = 2,143.64/x
  3. Step 3: Cross multiply
    3,715.55x = 5,127.45 × 2,143.64
  4. Step 4: Simplify right side
    3,715.55x = 10,991,406.92
  5. Step 5: Solve for x
    x = 10,991,406.92/3,715.55
  6. Step 6: Final answer
    x = 2,958.22

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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.