Home / 2,290.06-3,434.19-809.20

Finding the Fourth Proportional to 2,290.06, 3,434.19 and 809.20

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Solution

The fourth proportional to 2,290.06, 3,434.19 and 809.20 is: 1,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.06 : 3,434.19 = 809.20 : x
  2. Step 2: Convert to fraction form
    2,290.06/3,434.19 = 809.20/x
  3. Step 3: Cross multiply
    2,290.06x = 3,434.19 × 809.20
  4. Step 4: Simplify right side
    2,290.06x = 2,778,946.55
  5. Step 5: Solve for x
    x = 2,778,946.55/2,290.06
  6. Step 6: Final answer
    x = 1,213.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.