Home / 1,318.18-1,819.28-1,179.04

Finding the Fourth Proportional to 1,318.18, 1,819.28 and 1,179.04

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Solution

The fourth proportional to 1,318.18, 1,819.28 and 1,179.04 is: 1,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.18 : 1,819.28 = 1,179.04 : x
  2. Step 2: Convert to fraction form
    1,318.18/1,819.28 = 1,179.04/x
  3. Step 3: Cross multiply
    1,318.18x = 1,819.28 × 1,179.04
  4. Step 4: Simplify right side
    1,318.18x = 2,145,003.89
  5. Step 5: Solve for x
    x = 2,145,003.89/1,318.18
  6. Step 6: Final answer
    x = 1,627.25

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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.