Home / 7,981.96-11,014.67-4,578.80

Finding the Fourth Proportional to 7,981.96, 11,014.67 and 4,578.80

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Solution

The fourth proportional to 7,981.96, 11,014.67 and 4,578.80 is: 6,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.96 : 11,014.67 = 4,578.80 : x
  2. Step 2: Convert to fraction form
    7,981.96/11,014.67 = 4,578.80/x
  3. Step 3: Cross multiply
    7,981.96x = 11,014.67 × 4,578.80
  4. Step 4: Simplify right side
    7,981.96x = 50,433,915.92
  5. Step 5: Solve for x
    x = 50,433,915.92/7,981.96
  6. Step 6: Final answer
    x = 6,318.49

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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.