Home / 5,180.15-7,770.23-1,284.56

Finding the Fourth Proportional to 5,180.15, 7,770.23 and 1,284.56

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Solution

The fourth proportional to 5,180.15, 7,770.23 and 1,284.56 is: 1,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.15 : 7,770.23 = 1,284.56 : x
  2. Step 2: Convert to fraction form
    5,180.15/7,770.23 = 1,284.56/x
  3. Step 3: Cross multiply
    5,180.15x = 7,770.23 × 1,284.56
  4. Step 4: Simplify right side
    5,180.15x = 9,981,326.65
  5. Step 5: Solve for x
    x = 9,981,326.65/5,180.15
  6. Step 6: Final answer
    x = 1,926.84

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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.