Home / 3,931.26-5,389.98-3,861.06

Finding the Fourth Proportional to 3,931.26, 5,389.98 and 3,861.06

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Solution

The fourth proportional to 3,931.26, 5,389.98 and 3,861.06 is: 5,293.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.26 : 5,389.98 = 3,861.06 : x
  2. Step 2: Convert to fraction form
    3,931.26/5,389.98 = 3,861.06/x
  3. Step 3: Cross multiply
    3,931.26x = 5,389.98 × 3,861.06
  4. Step 4: Simplify right side
    3,931.26x = 20,811,036.18
  5. Step 5: Solve for x
    x = 20,811,036.18/3,931.26
  6. Step 6: Final answer
    x = 5,293.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.