Home / 5,479.19-8,214.92-1,920.43

Finding the Fourth Proportional to 5,479.19, 8,214.92 and 1,920.43

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Solution

The fourth proportional to 5,479.19, 8,214.92 and 1,920.43 is: 2,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.19 : 8,214.92 = 1,920.43 : x
  2. Step 2: Convert to fraction form
    5,479.19/8,214.92 = 1,920.43/x
  3. Step 3: Cross multiply
    5,479.19x = 8,214.92 × 1,920.43
  4. Step 4: Simplify right side
    5,479.19x = 15,776,178.82
  5. Step 5: Solve for x
    x = 15,776,178.82/5,479.19
  6. Step 6: Final answer
    x = 2,879.29

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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.