Home / 2,172.13-3,256.98-1,479.75

Finding the Fourth Proportional to 2,172.13, 3,256.98 and 1,479.75

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Solution

The fourth proportional to 2,172.13, 3,256.98 and 1,479.75 is: 2,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.13 : 3,256.98 = 1,479.75 : x
  2. Step 2: Convert to fraction form
    2,172.13/3,256.98 = 1,479.75/x
  3. Step 3: Cross multiply
    2,172.13x = 3,256.98 × 1,479.75
  4. Step 4: Simplify right side
    2,172.13x = 4,819,516.16
  5. Step 5: Solve for x
    x = 4,819,516.16/2,172.13
  6. Step 6: Final answer
    x = 2,218.80

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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.