Home / 2,712.68-4,071.42-1,397.36

Finding the Fourth Proportional to 2,712.68, 4,071.42 and 1,397.36

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Solution

The fourth proportional to 2,712.68, 4,071.42 and 1,397.36 is: 2,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.68 : 4,071.42 = 1,397.36 : x
  2. Step 2: Convert to fraction form
    2,712.68/4,071.42 = 1,397.36/x
  3. Step 3: Cross multiply
    2,712.68x = 4,071.42 × 1,397.36
  4. Step 4: Simplify right side
    2,712.68x = 5,689,239.45
  5. Step 5: Solve for x
    x = 5,689,239.45/2,712.68
  6. Step 6: Final answer
    x = 2,097.28

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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.