Home / 2,097.14-3,126.42-1,998.72

Finding the Fourth Proportional to 2,097.14, 3,126.42 and 1,998.72

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Solution

The fourth proportional to 2,097.14, 3,126.42 and 1,998.72 is: 2,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.14 : 3,126.42 = 1,998.72 : x
  2. Step 2: Convert to fraction form
    2,097.14/3,126.42 = 1,998.72/x
  3. Step 3: Cross multiply
    2,097.14x = 3,126.42 × 1,998.72
  4. Step 4: Simplify right side
    2,097.14x = 6,248,838.18
  5. Step 5: Solve for x
    x = 6,248,838.18/2,097.14
  6. Step 6: Final answer
    x = 2,979.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.