Home / 2,512.80-3,456-2,318.40

Finding the Fourth Proportional to 2,512.80, 3,456 and 2,318.40

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Solution

The fourth proportional to 2,512.80, 3,456 and 2,318.40 is: 3,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.80 : 3,456 = 2,318.40 : x
  2. Step 2: Convert to fraction form
    2,512.80/3,456 = 2,318.40/x
  3. Step 3: Cross multiply
    2,512.80x = 3,456 × 2,318.40
  4. Step 4: Simplify right side
    2,512.80x = 8,012,390.40
  5. Step 5: Solve for x
    x = 8,012,390.40/2,512.80
  6. Step 6: Final answer
    x = 3,188.63

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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.