Home / 6,426.90-8,869.23-3,908.61

Finding the Fourth Proportional to 6,426.90, 8,869.23 and 3,908.61

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Solution

The fourth proportional to 6,426.90, 8,869.23 and 3,908.61 is: 5,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426.90 : 8,869.23 = 3,908.61 : x
  2. Step 2: Convert to fraction form
    6,426.90/8,869.23 = 3,908.61/x
  3. Step 3: Cross multiply
    6,426.90x = 8,869.23 × 3,908.61
  4. Step 4: Simplify right side
    6,426.90x = 34,666,361.07
  5. Step 5: Solve for x
    x = 34,666,361.07/6,426.90
  6. Step 6: Final answer
    x = 5,393.95

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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.