Home / 2,331.12-3,216.90-1,283.20

Finding the Fourth Proportional to 2,331.12, 3,216.90 and 1,283.20

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Solution

The fourth proportional to 2,331.12, 3,216.90 and 1,283.20 is: 1,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.12 : 3,216.90 = 1,283.20 : x
  2. Step 2: Convert to fraction form
    2,331.12/3,216.90 = 1,283.20/x
  3. Step 3: Cross multiply
    2,331.12x = 3,216.90 × 1,283.20
  4. Step 4: Simplify right side
    2,331.12x = 4,127,926.08
  5. Step 5: Solve for x
    x = 4,127,926.08/2,331.12
  6. Step 6: Final answer
    x = 1,770.79

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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.