Home / 2,385.52-3,579.31-1,290.66

Finding the Fourth Proportional to 2,385.52, 3,579.31 and 1,290.66

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Solution

The fourth proportional to 2,385.52, 3,579.31 and 1,290.66 is: 1,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.52 : 3,579.31 = 1,290.66 : x
  2. Step 2: Convert to fraction form
    2,385.52/3,579.31 = 1,290.66/x
  3. Step 3: Cross multiply
    2,385.52x = 3,579.31 × 1,290.66
  4. Step 4: Simplify right side
    2,385.52x = 4,619,672.24
  5. Step 5: Solve for x
    x = 4,619,672.24/2,385.52
  6. Step 6: Final answer
    x = 1,936.55

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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.