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Finding the Fourth Proportional to 8,145.55, 12,220.91 and 3,641.91

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Solution

The fourth proportional to 8,145.55, 12,220.91 and 3,641.91 is: 5,464.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.55 : 12,220.91 = 3,641.91 : x
  2. Step 2: Convert to fraction form
    8,145.55/12,220.91 = 3,641.91/x
  3. Step 3: Cross multiply
    8,145.55x = 12,220.91 × 3,641.91
  4. Step 4: Simplify right side
    8,145.55x = 44,507,454.34
  5. Step 5: Solve for x
    x = 44,507,454.34/8,145.55
  6. Step 6: Final answer
    x = 5,464.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.