Home / 3,215.75-4,420.71-2,765.97

Finding the Fourth Proportional to 3,215.75, 4,420.71 and 2,765.97

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Solution

The fourth proportional to 3,215.75, 4,420.71 and 2,765.97 is: 3,802.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.75 : 4,420.71 = 2,765.97 : x
  2. Step 2: Convert to fraction form
    3,215.75/4,420.71 = 2,765.97/x
  3. Step 3: Cross multiply
    3,215.75x = 4,420.71 × 2,765.97
  4. Step 4: Simplify right side
    3,215.75x = 12,227,551.24
  5. Step 5: Solve for x
    x = 12,227,551.24/3,215.75
  6. Step 6: Final answer
    x = 3,802.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.