Home / 1,179.44-1,617.28-1,138.24

Finding the Fourth Proportional to 1,179.44, 1,617.28 and 1,138.24

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Solution

The fourth proportional to 1,179.44, 1,617.28 and 1,138.24 is: 1,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.44 : 1,617.28 = 1,138.24 : x
  2. Step 2: Convert to fraction form
    1,179.44/1,617.28 = 1,138.24/x
  3. Step 3: Cross multiply
    1,179.44x = 1,617.28 × 1,138.24
  4. Step 4: Simplify right side
    1,179.44x = 1,840,852.79
  5. Step 5: Solve for x
    x = 1,840,852.79/1,179.44
  6. Step 6: Final answer
    x = 1,560.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.