Home / 2,383.29-3,287.80-1,439.12

Finding the Fourth Proportional to 2,383.29, 3,287.80 and 1,439.12

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Solution

The fourth proportional to 2,383.29, 3,287.80 and 1,439.12 is: 1,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.29 : 3,287.80 = 1,439.12 : x
  2. Step 2: Convert to fraction form
    2,383.29/3,287.80 = 1,439.12/x
  3. Step 3: Cross multiply
    2,383.29x = 3,287.80 × 1,439.12
  4. Step 4: Simplify right side
    2,383.29x = 4,731,538.74
  5. Step 5: Solve for x
    x = 4,731,538.74/2,383.29
  6. Step 6: Final answer
    x = 1,985.30

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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.