Home / 3,139.80-4,708.14-1,192.16

Finding the Fourth Proportional to 3,139.80, 4,708.14 and 1,192.16

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Solution

The fourth proportional to 3,139.80, 4,708.14 and 1,192.16 is: 1,787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.80 : 4,708.14 = 1,192.16 : x
  2. Step 2: Convert to fraction form
    3,139.80/4,708.14 = 1,192.16/x
  3. Step 3: Cross multiply
    3,139.80x = 4,708.14 × 1,192.16
  4. Step 4: Simplify right side
    3,139.80x = 5,612,832.64
  5. Step 5: Solve for x
    x = 5,612,832.64/3,139.80
  6. Step 6: Final answer
    x = 1,787.64

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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.