Home / 2,981.13-4,112.53-2,097.42

Finding the Fourth Proportional to 2,981.13, 4,112.53 and 2,097.42

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Solution

The fourth proportional to 2,981.13, 4,112.53 and 2,097.42 is: 2,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.13 : 4,112.53 = 2,097.42 : x
  2. Step 2: Convert to fraction form
    2,981.13/4,112.53 = 2,097.42/x
  3. Step 3: Cross multiply
    2,981.13x = 4,112.53 × 2,097.42
  4. Step 4: Simplify right side
    2,981.13x = 8,625,702.67
  5. Step 5: Solve for x
    x = 8,625,702.67/2,981.13
  6. Step 6: Final answer
    x = 2,893.43

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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.