Home / 2,172.10-3,257.34-873.13

Finding the Fourth Proportional to 2,172.10, 3,257.34 and 873.13

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Solution

The fourth proportional to 2,172.10, 3,257.34 and 873.13 is: 1,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.10 : 3,257.34 = 873.13 : x
  2. Step 2: Convert to fraction form
    2,172.10/3,257.34 = 873.13/x
  3. Step 3: Cross multiply
    2,172.10x = 3,257.34 × 873.13
  4. Step 4: Simplify right side
    2,172.10x = 2,844,081.27
  5. Step 5: Solve for x
    x = 2,844,081.27/2,172.10
  6. Step 6: Final answer
    x = 1,309.37

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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.