Home / 1,173.80-1,618.62-1,147.04

Finding the Fourth Proportional to 1,173.80, 1,618.62 and 1,147.04

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Solution

The fourth proportional to 1,173.80, 1,618.62 and 1,147.04 is: 1,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.80 : 1,618.62 = 1,147.04 : x
  2. Step 2: Convert to fraction form
    1,173.80/1,618.62 = 1,147.04/x
  3. Step 3: Cross multiply
    1,173.80x = 1,618.62 × 1,147.04
  4. Step 4: Simplify right side
    1,173.80x = 1,856,621.88
  5. Step 5: Solve for x
    x = 1,856,621.88/1,173.80
  6. Step 6: Final answer
    x = 1,581.72

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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.