Home / 3,920.05-5,879.76-1,146.75

Finding the Fourth Proportional to 3,920.05, 5,879.76 and 1,146.75

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Solution

The fourth proportional to 3,920.05, 5,879.76 and 1,146.75 is: 1,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.05 : 5,879.76 = 1,146.75 : x
  2. Step 2: Convert to fraction form
    3,920.05/5,879.76 = 1,146.75/x
  3. Step 3: Cross multiply
    3,920.05x = 5,879.76 × 1,146.75
  4. Step 4: Simplify right side
    3,920.05x = 6,742,614.78
  5. Step 5: Solve for x
    x = 6,742,614.78/3,920.05
  6. Step 6: Final answer
    x = 1,720.03

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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.