Home / 5,112.42-7,055.40-2,874.66

Finding the Fourth Proportional to 5,112.42, 7,055.40 and 2,874.66

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Solution

The fourth proportional to 5,112.42, 7,055.40 and 2,874.66 is: 3,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.42 : 7,055.40 = 2,874.66 : x
  2. Step 2: Convert to fraction form
    5,112.42/7,055.40 = 2,874.66/x
  3. Step 3: Cross multiply
    5,112.42x = 7,055.40 × 2,874.66
  4. Step 4: Simplify right side
    5,112.42x = 20,281,876.16
  5. Step 5: Solve for x
    x = 20,281,876.16/5,112.42
  6. Step 6: Final answer
    x = 3,967.18

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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.