Home / 1,158.89-1,738.19-427.92

Finding the Fourth Proportional to 1,158.89, 1,738.19 and 427.92

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Solution

The fourth proportional to 1,158.89, 1,738.19 and 427.92 is: 641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.89 : 1,738.19 = 427.92 : x
  2. Step 2: Convert to fraction form
    1,158.89/1,738.19 = 427.92/x
  3. Step 3: Cross multiply
    1,158.89x = 1,738.19 × 427.92
  4. Step 4: Simplify right side
    1,158.89x = 743,804.13
  5. Step 5: Solve for x
    x = 743,804.13/1,158.89
  6. Step 6: Final answer
    x = 641.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.