Home / 7,916.78-11,816.70-6,982.92

Finding the Fourth Proportional to 7,916.78, 11,816.70 and 6,982.92

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Solution

The fourth proportional to 7,916.78, 11,816.70 and 6,982.92 is: 10,422.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.78 : 11,816.70 = 6,982.92 : x
  2. Step 2: Convert to fraction form
    7,916.78/11,816.70 = 6,982.92/x
  3. Step 3: Cross multiply
    7,916.78x = 11,816.70 × 6,982.92
  4. Step 4: Simplify right side
    7,916.78x = 82,515,070.76
  5. Step 5: Solve for x
    x = 82,515,070.76/7,916.78
  6. Step 6: Final answer
    x = 10,422.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.