Home / 2,379.30-3,567.74-918.87

Finding the Fourth Proportional to 2,379.30, 3,567.74 and 918.87

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Solution

The fourth proportional to 2,379.30, 3,567.74 and 918.87 is: 1,377.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.30 : 3,567.74 = 918.87 : x
  2. Step 2: Convert to fraction form
    2,379.30/3,567.74 = 918.87/x
  3. Step 3: Cross multiply
    2,379.30x = 3,567.74 × 918.87
  4. Step 4: Simplify right side
    2,379.30x = 3,278,284.66
  5. Step 5: Solve for x
    x = 3,278,284.66/2,379.30
  6. Step 6: Final answer
    x = 1,377.84

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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.