Home / 2,515.89-3,774.30-1,129.26

Finding the Fourth Proportional to 2,515.89, 3,774.30 and 1,129.26

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Solution

The fourth proportional to 2,515.89, 3,774.30 and 1,129.26 is: 1,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.89 : 3,774.30 = 1,129.26 : x
  2. Step 2: Convert to fraction form
    2,515.89/3,774.30 = 1,129.26/x
  3. Step 3: Cross multiply
    2,515.89x = 3,774.30 × 1,129.26
  4. Step 4: Simplify right side
    2,515.89x = 4,262,166.02
  5. Step 5: Solve for x
    x = 4,262,166.02/2,515.89
  6. Step 6: Final answer
    x = 1,694.10

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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.