Home / 3,220.74-4,831.17-1,140.78

Finding the Fourth Proportional to 3,220.74, 4,831.17 and 1,140.78

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Solution

The fourth proportional to 3,220.74, 4,831.17 and 1,140.78 is: 1,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.74 : 4,831.17 = 1,140.78 : x
  2. Step 2: Convert to fraction form
    3,220.74/4,831.17 = 1,140.78/x
  3. Step 3: Cross multiply
    3,220.74x = 4,831.17 × 1,140.78
  4. Step 4: Simplify right side
    3,220.74x = 5,511,302.11
  5. Step 5: Solve for x
    x = 5,511,302.11/3,220.74
  6. Step 6: Final answer
    x = 1,711.19

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1.5x scale

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.