Home / 3,172.38-4,381.47-2,679.18

Finding the Fourth Proportional to 3,172.38, 4,381.47 and 2,679.18

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Solution

The fourth proportional to 3,172.38, 4,381.47 and 2,679.18 is: 3,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.38 : 4,381.47 = 2,679.18 : x
  2. Step 2: Convert to fraction form
    3,172.38/4,381.47 = 2,679.18/x
  3. Step 3: Cross multiply
    3,172.38x = 4,381.47 × 2,679.18
  4. Step 4: Simplify right side
    3,172.38x = 11,738,746.79
  5. Step 5: Solve for x
    x = 11,738,746.79/3,172.38
  6. Step 6: Final answer
    x = 3,700.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.