Home / 5,121.66-7,068.56-2,883.97

Finding the Fourth Proportional to 5,121.66, 7,068.56 and 2,883.97

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Solution

The fourth proportional to 5,121.66, 7,068.56 and 2,883.97 is: 3,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.66 : 7,068.56 = 2,883.97 : x
  2. Step 2: Convert to fraction form
    5,121.66/7,068.56 = 2,883.97/x
  3. Step 3: Cross multiply
    5,121.66x = 7,068.56 × 2,883.97
  4. Step 4: Simplify right side
    5,121.66x = 20,385,514.98
  5. Step 5: Solve for x
    x = 20,385,514.98/5,121.66
  6. Step 6: Final answer
    x = 3,980.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.