Home / 1,521.90-2,100.46-1,149.30

Finding the Fourth Proportional to 1,521.90, 2,100.46 and 1,149.30

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Solution

The fourth proportional to 1,521.90, 2,100.46 and 1,149.30 is: 1,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.90 : 2,100.46 = 1,149.30 : x
  2. Step 2: Convert to fraction form
    1,521.90/2,100.46 = 1,149.30/x
  3. Step 3: Cross multiply
    1,521.90x = 2,100.46 × 1,149.30
  4. Step 4: Simplify right side
    1,521.90x = 2,414,058.68
  5. Step 5: Solve for x
    x = 2,414,058.68/1,521.90
  6. Step 6: Final answer
    x = 1,586.21

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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.