Home / 7,622.53-10,515.13-5,380.85

Finding the Fourth Proportional to 7,622.53, 10,515.13 and 5,380.85

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Solution

The fourth proportional to 7,622.53, 10,515.13 and 5,380.85 is: 7,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.53 : 10,515.13 = 5,380.85 : x
  2. Step 2: Convert to fraction form
    7,622.53/10,515.13 = 5,380.85/x
  3. Step 3: Cross multiply
    7,622.53x = 10,515.13 × 5,380.85
  4. Step 4: Simplify right side
    7,622.53x = 56,580,380.36
  5. Step 5: Solve for x
    x = 56,580,380.36/7,622.53
  6. Step 6: Final answer
    x = 7,422.78

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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.