Home / 2,918.85-4,379.25-1,276.47

Finding the Fourth Proportional to 2,918.85, 4,379.25 and 1,276.47

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Solution

The fourth proportional to 2,918.85, 4,379.25 and 1,276.47 is: 1,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.85 : 4,379.25 = 1,276.47 : x
  2. Step 2: Convert to fraction form
    2,918.85/4,379.25 = 1,276.47/x
  3. Step 3: Cross multiply
    2,918.85x = 4,379.25 × 1,276.47
  4. Step 4: Simplify right side
    2,918.85x = 5,589,981.25
  5. Step 5: Solve for x
    x = 5,589,981.25/2,918.85
  6. Step 6: Final answer
    x = 1,915.13

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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.