Home / 2,329.75-3,215.12-1,281.88

Finding the Fourth Proportional to 2,329.75, 3,215.12 and 1,281.88

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Solution

The fourth proportional to 2,329.75, 3,215.12 and 1,281.88 is: 1,769.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.75 : 3,215.12 = 1,281.88 : x
  2. Step 2: Convert to fraction form
    2,329.75/3,215.12 = 1,281.88/x
  3. Step 3: Cross multiply
    2,329.75x = 3,215.12 × 1,281.88
  4. Step 4: Simplify right side
    2,329.75x = 4,121,398.03
  5. Step 5: Solve for x
    x = 4,121,398.03/2,329.75
  6. Step 6: Final answer
    x = 1,769.03

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1.5x scale

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.