Home / 6,922.13-10,384.92-1,991.66

Finding the Fourth Proportional to 6,922.13, 10,384.92 and 1,991.66

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Solution

The fourth proportional to 6,922.13, 10,384.92 and 1,991.66 is: 2,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,922.13 : 10,384.92 = 1,991.66 : x
  2. Step 2: Convert to fraction form
    6,922.13/10,384.92 = 1,991.66/x
  3. Step 3: Cross multiply
    6,922.13x = 10,384.92 × 1,991.66
  4. Step 4: Simplify right side
    6,922.13x = 20,683,177.84
  5. Step 5: Solve for x
    x = 20,683,177.84/6,922.13
  6. Step 6: Final answer
    x = 2,987.98

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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.