Home / 3,140.68-4,711.29-949.36

Finding the Fourth Proportional to 3,140.68, 4,711.29 and 949.36

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Solution

The fourth proportional to 3,140.68, 4,711.29 and 949.36 is: 1,424.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.68 : 4,711.29 = 949.36 : x
  2. Step 2: Convert to fraction form
    3,140.68/4,711.29 = 949.36/x
  3. Step 3: Cross multiply
    3,140.68x = 4,711.29 × 949.36
  4. Step 4: Simplify right side
    3,140.68x = 4,472,710.27
  5. Step 5: Solve for x
    x = 4,472,710.27/3,140.68
  6. Step 6: Final answer
    x = 1,424.12

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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.