Home / 1,558.80-2,149.74-1,119.54

Finding the Fourth Proportional to 1,558.80, 2,149.74 and 1,119.54

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Solution

The fourth proportional to 1,558.80, 2,149.74 and 1,119.54 is: 1,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.80 : 2,149.74 = 1,119.54 : x
  2. Step 2: Convert to fraction form
    1,558.80/2,149.74 = 1,119.54/x
  3. Step 3: Cross multiply
    1,558.80x = 2,149.74 × 1,119.54
  4. Step 4: Simplify right side
    1,558.80x = 2,406,719.92
  5. Step 5: Solve for x
    x = 2,406,719.92/1,558.80
  6. Step 6: Final answer
    x = 1,543.96

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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.