Home / 3,209.45-4,430.16-2,217.20

Finding the Fourth Proportional to 3,209.45, 4,430.16 and 2,217.20

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Solution

The fourth proportional to 3,209.45, 4,430.16 and 2,217.20 is: 3,060.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.45 : 4,430.16 = 2,217.20 : x
  2. Step 2: Convert to fraction form
    3,209.45/4,430.16 = 2,217.20/x
  3. Step 3: Cross multiply
    3,209.45x = 4,430.16 × 2,217.20
  4. Step 4: Simplify right side
    3,209.45x = 9,822,528.60
  5. Step 5: Solve for x
    x = 9,822,528.60/3,209.45
  6. Step 6: Final answer
    x = 3,060.51

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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.