Home / 1,625.25-2,242.78-926.63

Finding the Fourth Proportional to 1,625.25, 2,242.78 and 926.63

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Solution

The fourth proportional to 1,625.25, 2,242.78 and 926.63 is: 1,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.25 : 2,242.78 = 926.63 : x
  2. Step 2: Convert to fraction form
    1,625.25/2,242.78 = 926.63/x
  3. Step 3: Cross multiply
    1,625.25x = 2,242.78 × 926.63
  4. Step 4: Simplify right side
    1,625.25x = 2,078,227.23
  5. Step 5: Solve for x
    x = 2,078,227.23/1,625.25
  6. Step 6: Final answer
    x = 1,278.71

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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.