Home / 2,909.66-4,012.22-2,162.39

Finding the Fourth Proportional to 2,909.66, 4,012.22 and 2,162.39

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Solution

The fourth proportional to 2,909.66, 4,012.22 and 2,162.39 is: 2,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.66 : 4,012.22 = 2,162.39 : x
  2. Step 2: Convert to fraction form
    2,909.66/4,012.22 = 2,162.39/x
  3. Step 3: Cross multiply
    2,909.66x = 4,012.22 × 2,162.39
  4. Step 4: Simplify right side
    2,909.66x = 8,675,969.75
  5. Step 5: Solve for x
    x = 8,675,969.75/2,909.66
  6. Step 6: Final answer
    x = 2,981.79

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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.