Home / 7,868.26-10,857.21-5,321.57

Finding the Fourth Proportional to 7,868.26, 10,857.21 and 5,321.57

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Solution

The fourth proportional to 7,868.26, 10,857.21 and 5,321.57 is: 7,343.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.26 : 10,857.21 = 5,321.57 : x
  2. Step 2: Convert to fraction form
    7,868.26/10,857.21 = 5,321.57/x
  3. Step 3: Cross multiply
    7,868.26x = 10,857.21 × 5,321.57
  4. Step 4: Simplify right side
    7,868.26x = 57,777,328.78
  5. Step 5: Solve for x
    x = 57,777,328.78/7,868.26
  6. Step 6: Final answer
    x = 7,343.09

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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.