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Finding the Fourth Proportional to 2,869.60, 4,304.30 and 817.60

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Solution

The fourth proportional to 2,869.60, 4,304.30 and 817.60 is: 1,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.60 : 4,304.30 = 817.60 : x
  2. Step 2: Convert to fraction form
    2,869.60/4,304.30 = 817.60/x
  3. Step 3: Cross multiply
    2,869.60x = 4,304.30 × 817.60
  4. Step 4: Simplify right side
    2,869.60x = 3,519,195.68
  5. Step 5: Solve for x
    x = 3,519,195.68/2,869.60
  6. Step 6: Final answer
    x = 1,226.37

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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.