Home / 9,905.91-13,669.79-5,926.78

Finding the Fourth Proportional to 9,905.91, 13,669.79 and 5,926.78

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Solution

The fourth proportional to 9,905.91, 13,669.79 and 5,926.78 is: 8,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.91 : 13,669.79 = 5,926.78 : x
  2. Step 2: Convert to fraction form
    9,905.91/13,669.79 = 5,926.78/x
  3. Step 3: Cross multiply
    9,905.91x = 13,669.79 × 5,926.78
  4. Step 4: Simplify right side
    9,905.91x = 81,017,837.98
  5. Step 5: Solve for x
    x = 81,017,837.98/9,905.91
  6. Step 6: Final answer
    x = 8,178.74

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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.