Home / 1,634.80-2,255.92-926.68

Finding the Fourth Proportional to 1,634.80, 2,255.92 and 926.68

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Solution

The fourth proportional to 1,634.80, 2,255.92 and 926.68 is: 1,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.80 : 2,255.92 = 926.68 : x
  2. Step 2: Convert to fraction form
    1,634.80/2,255.92 = 926.68/x
  3. Step 3: Cross multiply
    1,634.80x = 2,255.92 × 926.68
  4. Step 4: Simplify right side
    1,634.80x = 2,090,515.95
  5. Step 5: Solve for x
    x = 2,090,515.95/1,634.80
  6. Step 6: Final answer
    x = 1,278.76

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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.