Home / 7,981.53-11,021.18-5,868.87

Finding the Fourth Proportional to 7,981.53, 11,021.18 and 5,868.87

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Solution

The fourth proportional to 7,981.53, 11,021.18 and 5,868.87 is: 8,103.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.53 : 11,021.18 = 5,868.87 : x
  2. Step 2: Convert to fraction form
    7,981.53/11,021.18 = 5,868.87/x
  3. Step 3: Cross multiply
    7,981.53x = 11,021.18 × 5,868.87
  4. Step 4: Simplify right side
    7,981.53x = 64,681,843.32
  5. Step 5: Solve for x
    x = 64,681,843.32/7,981.53
  6. Step 6: Final answer
    x = 8,103.94

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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.