Home / 5,231.88-7,220-2,874.16

Finding the Fourth Proportional to 5,231.88, 7,220 and 2,874.16

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Solution

The fourth proportional to 5,231.88, 7,220 and 2,874.16 is: 3,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.88 : 7,220 = 2,874.16 : x
  2. Step 2: Convert to fraction form
    5,231.88/7,220 = 2,874.16/x
  3. Step 3: Cross multiply
    5,231.88x = 7,220 × 2,874.16
  4. Step 4: Simplify right side
    5,231.88x = 20,751,435.20
  5. Step 5: Solve for x
    x = 20,751,435.20/5,231.88
  6. Step 6: Final answer
    x = 3,966.34

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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.