Home / 2,831.97-4,228.86-2,312.98

Finding the Fourth Proportional to 2,831.97, 4,228.86 and 2,312.98

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Solution

The fourth proportional to 2,831.97, 4,228.86 and 2,312.98 is: 3,453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.97 : 4,228.86 = 2,312.98 : x
  2. Step 2: Convert to fraction form
    2,831.97/4,228.86 = 2,312.98/x
  3. Step 3: Cross multiply
    2,831.97x = 4,228.86 × 2,312.98
  4. Step 4: Simplify right side
    2,831.97x = 9,781,280.22
  5. Step 5: Solve for x
    x = 9,781,280.22/2,831.97
  6. Step 6: Final answer
    x = 3,453.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.