Home / 5,118.80-7,668.47-2,920.86

Finding the Fourth Proportional to 5,118.80, 7,668.47 and 2,920.86

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Solution

The fourth proportional to 5,118.80, 7,668.47 and 2,920.86 is: 4,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.80 : 7,668.47 = 2,920.86 : x
  2. Step 2: Convert to fraction form
    5,118.80/7,668.47 = 2,920.86/x
  3. Step 3: Cross multiply
    5,118.80x = 7,668.47 × 2,920.86
  4. Step 4: Simplify right side
    5,118.80x = 22,398,534.59
  5. Step 5: Solve for x
    x = 22,398,534.59/5,118.80
  6. Step 6: Final answer
    x = 4,375.74

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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.