Home / 7,949.48-11,916.27-3,988.62

Finding the Fourth Proportional to 7,949.48, 11,916.27 and 3,988.62

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Solution

The fourth proportional to 7,949.48, 11,916.27 and 3,988.62 is: 5,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.48 : 11,916.27 = 3,988.62 : x
  2. Step 2: Convert to fraction form
    7,949.48/11,916.27 = 3,988.62/x
  3. Step 3: Cross multiply
    7,949.48x = 11,916.27 × 3,988.62
  4. Step 4: Simplify right side
    7,949.48x = 47,529,472.85
  5. Step 5: Solve for x
    x = 47,529,472.85/7,949.48
  6. Step 6: Final answer
    x = 5,978.94

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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.