Home / 3,192.40-4,787.80-1,139.92

Finding the Fourth Proportional to 3,192.40, 4,787.80 and 1,139.92

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Solution

The fourth proportional to 3,192.40, 4,787.80 and 1,139.92 is: 1,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,192.40 : 4,787.80 = 1,139.92 : x
  2. Step 2: Convert to fraction form
    3,192.40/4,787.80 = 1,139.92/x
  3. Step 3: Cross multiply
    3,192.40x = 4,787.80 × 1,139.92
  4. Step 4: Simplify right side
    3,192.40x = 5,457,708.98
  5. Step 5: Solve for x
    x = 5,457,708.98/3,192.40
  6. Step 6: Final answer
    x = 1,709.59

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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.