Home / 3,126.72-4,316-2,079.04

Finding the Fourth Proportional to 3,126.72, 4,316 and 2,079.04

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Solution

The fourth proportional to 3,126.72, 4,316 and 2,079.04 is: 2,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.72 : 4,316 = 2,079.04 : x
  2. Step 2: Convert to fraction form
    3,126.72/4,316 = 2,079.04/x
  3. Step 3: Cross multiply
    3,126.72x = 4,316 × 2,079.04
  4. Step 4: Simplify right side
    3,126.72x = 8,973,136.64
  5. Step 5: Solve for x
    x = 8,973,136.64/3,126.72
  6. Step 6: Final answer
    x = 2,869.82

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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.