Home / 3,208.48-4,420.66-2,158.72

Finding the Fourth Proportional to 3,208.48, 4,420.66 and 2,158.72

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Solution

The fourth proportional to 3,208.48, 4,420.66 and 2,158.72 is: 2,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.48 : 4,420.66 = 2,158.72 : x
  2. Step 2: Convert to fraction form
    3,208.48/4,420.66 = 2,158.72/x
  3. Step 3: Cross multiply
    3,208.48x = 4,420.66 × 2,158.72
  4. Step 4: Simplify right side
    3,208.48x = 9,542,967.16
  5. Step 5: Solve for x
    x = 9,542,967.16/3,208.48
  6. Step 6: Final answer
    x = 2,974.30

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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.