Home / 1,489.31-2,230.58-1,282.23

Finding the Fourth Proportional to 1,489.31, 2,230.58 and 1,282.23

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Solution

The fourth proportional to 1,489.31, 2,230.58 and 1,282.23 is: 1,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.31 : 2,230.58 = 1,282.23 : x
  2. Step 2: Convert to fraction form
    1,489.31/2,230.58 = 1,282.23/x
  3. Step 3: Cross multiply
    1,489.31x = 2,230.58 × 1,282.23
  4. Step 4: Simplify right side
    1,489.31x = 2,860,116.59
  5. Step 5: Solve for x
    x = 2,860,116.59/1,489.31
  6. Step 6: Final answer
    x = 1,920.43

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1.5x scale

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.