Home / 1,691.45-2,334.18-945.39

Finding the Fourth Proportional to 1,691.45, 2,334.18 and 945.39

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Solution

The fourth proportional to 1,691.45, 2,334.18 and 945.39 is: 1,304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.45 : 2,334.18 = 945.39 : x
  2. Step 2: Convert to fraction form
    1,691.45/2,334.18 = 945.39/x
  3. Step 3: Cross multiply
    1,691.45x = 2,334.18 × 945.39
  4. Step 4: Simplify right side
    1,691.45x = 2,206,710.43
  5. Step 5: Solve for x
    x = 2,206,710.43/1,691.45
  6. Step 6: Final answer
    x = 1,304.63

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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.