Home / 2,640.57-3,648.79-2,512.45

Finding the Fourth Proportional to 2,640.57, 3,648.79 and 2,512.45

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Solution

The fourth proportional to 2,640.57, 3,648.79 and 2,512.45 is: 3,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.57 : 3,648.79 = 2,512.45 : x
  2. Step 2: Convert to fraction form
    2,640.57/3,648.79 = 2,512.45/x
  3. Step 3: Cross multiply
    2,640.57x = 3,648.79 × 2,512.45
  4. Step 4: Simplify right side
    2,640.57x = 9,167,402.44
  5. Step 5: Solve for x
    x = 9,167,402.44/2,640.57
  6. Step 6: Final answer
    x = 3,471.75

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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.