Home / 3,785.20-5,678.56-1,934.80

Finding the Fourth Proportional to 3,785.20, 5,678.56 and 1,934.80

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Solution

The fourth proportional to 3,785.20, 5,678.56 and 1,934.80 is: 2,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.20 : 5,678.56 = 1,934.80 : x
  2. Step 2: Convert to fraction form
    3,785.20/5,678.56 = 1,934.80/x
  3. Step 3: Cross multiply
    3,785.20x = 5,678.56 × 1,934.80
  4. Step 4: Simplify right side
    3,785.20x = 10,986,877.89
  5. Step 5: Solve for x
    x = 10,986,877.89/3,785.20
  6. Step 6: Final answer
    x = 2,902.59

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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.