Home / 6,910.60-10,362.78-1,979.11

Finding the Fourth Proportional to 6,910.60, 10,362.78 and 1,979.11

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Solution

The fourth proportional to 6,910.60, 10,362.78 and 1,979.11 is: 2,967.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,910.60 : 10,362.78 = 1,979.11 : x
  2. Step 2: Convert to fraction form
    6,910.60/10,362.78 = 1,979.11/x
  3. Step 3: Cross multiply
    6,910.60x = 10,362.78 × 1,979.11
  4. Step 4: Simplify right side
    6,910.60x = 20,509,081.53
  5. Step 5: Solve for x
    x = 20,509,081.53/6,910.60
  6. Step 6: Final answer
    x = 2,967.77

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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.