Home / 1,878.31-2,591.26-1,215.24

Finding the Fourth Proportional to 1,878.31, 2,591.26 and 1,215.24

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Solution

The fourth proportional to 1,878.31, 2,591.26 and 1,215.24 is: 1,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.31 : 2,591.26 = 1,215.24 : x
  2. Step 2: Convert to fraction form
    1,878.31/2,591.26 = 1,215.24/x
  3. Step 3: Cross multiply
    1,878.31x = 2,591.26 × 1,215.24
  4. Step 4: Simplify right side
    1,878.31x = 3,149,002.80
  5. Step 5: Solve for x
    x = 3,149,002.80/1,878.31
  6. Step 6: Final answer
    x = 1,676.51

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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.