Home / 8,381.53-11,561.88-5,351.05

Finding the Fourth Proportional to 8,381.53, 11,561.88 and 5,351.05

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Solution

The fourth proportional to 8,381.53, 11,561.88 and 5,351.05 is: 7,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.53 : 11,561.88 = 5,351.05 : x
  2. Step 2: Convert to fraction form
    8,381.53/11,561.88 = 5,351.05/x
  3. Step 3: Cross multiply
    8,381.53x = 11,561.88 × 5,351.05
  4. Step 4: Simplify right side
    8,381.53x = 61,868,197.97
  5. Step 5: Solve for x
    x = 61,868,197.97/8,381.53
  6. Step 6: Final answer
    x = 7,381.49

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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.