Home / 2,986.68-4,117.92-1,922.64

Finding the Fourth Proportional to 2,986.68, 4,117.92 and 1,922.64

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Solution

The fourth proportional to 2,986.68, 4,117.92 and 1,922.64 is: 2,650.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.68 : 4,117.92 = 1,922.64 : x
  2. Step 2: Convert to fraction form
    2,986.68/4,117.92 = 1,922.64/x
  3. Step 3: Cross multiply
    2,986.68x = 4,117.92 × 1,922.64
  4. Step 4: Simplify right side
    2,986.68x = 7,917,277.71
  5. Step 5: Solve for x
    x = 7,917,277.71/2,986.68
  6. Step 6: Final answer
    x = 2,650.86

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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.