Home / 1,119.80-1,543.38-1,104.68

Finding the Fourth Proportional to 1,119.80, 1,543.38 and 1,104.68

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Solution

The fourth proportional to 1,119.80, 1,543.38 and 1,104.68 is: 1,522.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.80 : 1,543.38 = 1,104.68 : x
  2. Step 2: Convert to fraction form
    1,119.80/1,543.38 = 1,104.68/x
  3. Step 3: Cross multiply
    1,119.80x = 1,543.38 × 1,104.68
  4. Step 4: Simplify right side
    1,119.80x = 1,704,941.02
  5. Step 5: Solve for x
    x = 1,704,941.02/1,119.80
  6. Step 6: Final answer
    x = 1,522.54

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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.