Home / 1,645.97-2,470.16-1,325.21

Finding the Fourth Proportional to 1,645.97, 2,470.16 and 1,325.21

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Solution

The fourth proportional to 1,645.97, 2,470.16 and 1,325.21 is: 1,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.97 : 2,470.16 = 1,325.21 : x
  2. Step 2: Convert to fraction form
    1,645.97/2,470.16 = 1,325.21/x
  3. Step 3: Cross multiply
    1,645.97x = 2,470.16 × 1,325.21
  4. Step 4: Simplify right side
    1,645.97x = 3,273,471.70
  5. Step 5: Solve for x
    x = 3,273,471.70/1,645.97
  6. Step 6: Final answer
    x = 1,988.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.