Home / 3,140.81-4,335.22-2,515.69

Finding the Fourth Proportional to 3,140.81, 4,335.22 and 2,515.69

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Solution

The fourth proportional to 3,140.81, 4,335.22 and 2,515.69 is: 3,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.81 : 4,335.22 = 2,515.69 : x
  2. Step 2: Convert to fraction form
    3,140.81/4,335.22 = 2,515.69/x
  3. Step 3: Cross multiply
    3,140.81x = 4,335.22 × 2,515.69
  4. Step 4: Simplify right side
    3,140.81x = 10,906,078.17
  5. Step 5: Solve for x
    x = 10,906,078.17/3,140.81
  6. Step 6: Final answer
    x = 3,472.38

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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.