Home / 2,087.28-3,130.68-700.56

Finding the Fourth Proportional to 2,087.28, 3,130.68 and 700.56

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Solution

The fourth proportional to 2,087.28, 3,130.68 and 700.56 is: 1,050.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.28 : 3,130.68 = 700.56 : x
  2. Step 2: Convert to fraction form
    2,087.28/3,130.68 = 700.56/x
  3. Step 3: Cross multiply
    2,087.28x = 3,130.68 × 700.56
  4. Step 4: Simplify right side
    2,087.28x = 2,193,229.18
  5. Step 5: Solve for x
    x = 2,193,229.18/2,087.28
  6. Step 6: Final answer
    x = 1,050.76

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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.