Home / 9,861.62-13,603.55-6,453.90

Finding the Fourth Proportional to 9,861.62, 13,603.55 and 6,453.90

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Solution

The fourth proportional to 9,861.62, 13,603.55 and 6,453.90 is: 8,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.62 : 13,603.55 = 6,453.90 : x
  2. Step 2: Convert to fraction form
    9,861.62/13,603.55 = 6,453.90/x
  3. Step 3: Cross multiply
    9,861.62x = 13,603.55 × 6,453.90
  4. Step 4: Simplify right side
    9,861.62x = 87,795,883.33
  5. Step 5: Solve for x
    x = 87,795,883.33/9,861.62
  6. Step 6: Final answer
    x = 8,902.79

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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.