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Finding the Fourth Proportional to 2,172.81, 3,259.22 and 1,018.29

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Solution

The fourth proportional to 2,172.81, 3,259.22 and 1,018.29 is: 1,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.81 : 3,259.22 = 1,018.29 : x
  2. Step 2: Convert to fraction form
    2,172.81/3,259.22 = 1,018.29/x
  3. Step 3: Cross multiply
    2,172.81x = 3,259.22 × 1,018.29
  4. Step 4: Simplify right side
    2,172.81x = 3,318,826.04
  5. Step 5: Solve for x
    x = 3,318,826.04/2,172.81
  6. Step 6: Final answer
    x = 1,527.44

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Similar ratio
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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.