Home / 1,909.83-2,631.99-1,489.52

Finding the Fourth Proportional to 1,909.83, 2,631.99 and 1,489.52

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Solution

The fourth proportional to 1,909.83, 2,631.99 and 1,489.52 is: 2,052.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.83 : 2,631.99 = 1,489.52 : x
  2. Step 2: Convert to fraction form
    1,909.83/2,631.99 = 1,489.52/x
  3. Step 3: Cross multiply
    1,909.83x = 2,631.99 × 1,489.52
  4. Step 4: Simplify right side
    1,909.83x = 3,920,388.58
  5. Step 5: Solve for x
    x = 3,920,388.58/1,909.83
  6. Step 6: Final answer
    x = 2,052.75

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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.