Home / 3,831.40-5,280.42-2,712.52

Finding the Fourth Proportional to 3,831.40, 5,280.42 and 2,712.52

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Solution

The fourth proportional to 3,831.40, 5,280.42 and 2,712.52 is: 3,738.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.40 : 5,280.42 = 2,712.52 : x
  2. Step 2: Convert to fraction form
    3,831.40/5,280.42 = 2,712.52/x
  3. Step 3: Cross multiply
    3,831.40x = 5,280.42 × 2,712.52
  4. Step 4: Simplify right side
    3,831.40x = 14,323,244.86
  5. Step 5: Solve for x
    x = 14,323,244.86/3,831.40
  6. Step 6: Final answer
    x = 3,738.38

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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.