Home / 2,972.18-4,095.97-2,131.43

Finding the Fourth Proportional to 2,972.18, 4,095.97 and 2,131.43

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Solution

The fourth proportional to 2,972.18, 4,095.97 and 2,131.43 is: 2,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.18 : 4,095.97 = 2,131.43 : x
  2. Step 2: Convert to fraction form
    2,972.18/4,095.97 = 2,131.43/x
  3. Step 3: Cross multiply
    2,972.18x = 4,095.97 × 2,131.43
  4. Step 4: Simplify right side
    2,972.18x = 8,730,263.14
  5. Step 5: Solve for x
    x = 8,730,263.14/2,972.18
  6. Step 6: Final answer
    x = 2,937.32

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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.