Home / 3,787.50-5,681.88-1,189.92

Finding the Fourth Proportional to 3,787.50, 5,681.88 and 1,189.92

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Solution

The fourth proportional to 3,787.50, 5,681.88 and 1,189.92 is: 1,785.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.50 : 5,681.88 = 1,189.92 : x
  2. Step 2: Convert to fraction form
    3,787.50/5,681.88 = 1,189.92/x
  3. Step 3: Cross multiply
    3,787.50x = 5,681.88 × 1,189.92
  4. Step 4: Simplify right side
    3,787.50x = 6,760,982.65
  5. Step 5: Solve for x
    x = 6,760,982.65/3,787.50
  6. Step 6: Final answer
    x = 1,785.08

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1.5x scale

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.