Home / 6,922.22-10,381.77-1,990.76

Finding the Fourth Proportional to 6,922.22, 10,381.77 and 1,990.76

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Solution

The fourth proportional to 6,922.22, 10,381.77 and 1,990.76 is: 2,985.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,922.22 : 10,381.77 = 1,990.76 : x
  2. Step 2: Convert to fraction form
    6,922.22/10,381.77 = 1,990.76/x
  3. Step 3: Cross multiply
    6,922.22x = 10,381.77 × 1,990.76
  4. Step 4: Simplify right side
    6,922.22x = 20,667,560.54
  5. Step 5: Solve for x
    x = 20,667,560.54/6,922.22
  6. Step 6: Final answer
    x = 2,985.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.