Home / 3,040.50-4,197.78-2,143.74

Finding the Fourth Proportional to 3,040.50, 4,197.78 and 2,143.74

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Solution

The fourth proportional to 3,040.50, 4,197.78 and 2,143.74 is: 2,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040.50 : 4,197.78 = 2,143.74 : x
  2. Step 2: Convert to fraction form
    3,040.50/4,197.78 = 2,143.74/x
  3. Step 3: Cross multiply
    3,040.50x = 4,197.78 × 2,143.74
  4. Step 4: Simplify right side
    3,040.50x = 8,998,948.90
  5. Step 5: Solve for x
    x = 8,998,948.90/3,040.50
  6. Step 6: Final answer
    x = 2,959.69

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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.