Home / 2,126.60-2,934.50-1,969.86

Finding the Fourth Proportional to 2,126.60, 2,934.50 and 1,969.86

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Solution

The fourth proportional to 2,126.60, 2,934.50 and 1,969.86 is: 2,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.60 : 2,934.50 = 1,969.86 : x
  2. Step 2: Convert to fraction form
    2,126.60/2,934.50 = 1,969.86/x
  3. Step 3: Cross multiply
    2,126.60x = 2,934.50 × 1,969.86
  4. Step 4: Simplify right side
    2,126.60x = 5,780,559.09
  5. Step 5: Solve for x
    x = 5,780,559.09/2,126.60
  6. Step 6: Final answer
    x = 2,718.22

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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.