Home / 2,456.19-3,390.12-1,512.57

Finding the Fourth Proportional to 2,456.19, 3,390.12 and 1,512.57

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Solution

The fourth proportional to 2,456.19, 3,390.12 and 1,512.57 is: 2,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,456.19 : 3,390.12 = 1,512.57 : x
  2. Step 2: Convert to fraction form
    2,456.19/3,390.12 = 1,512.57/x
  3. Step 3: Cross multiply
    2,456.19x = 3,390.12 × 1,512.57
  4. Step 4: Simplify right side
    2,456.19x = 5,127,806.52
  5. Step 5: Solve for x
    x = 5,127,806.52/2,456.19
  6. Step 6: Final answer
    x = 2,087.71

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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.