Home / 4,785.80-7,175.76-1,860.70

Finding the Fourth Proportional to 4,785.80, 7,175.76 and 1,860.70

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Solution

The fourth proportional to 4,785.80, 7,175.76 and 1,860.70 is: 2,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.80 : 7,175.76 = 1,860.70 : x
  2. Step 2: Convert to fraction form
    4,785.80/7,175.76 = 1,860.70/x
  3. Step 3: Cross multiply
    4,785.80x = 7,175.76 × 1,860.70
  4. Step 4: Simplify right side
    4,785.80x = 13,351,900.75
  5. Step 5: Solve for x
    x = 13,351,900.75/4,785.80
  6. Step 6: Final answer
    x = 2,789.90

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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.