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Finding the Fourth Proportional to 6,609.15, 9,913.21 and 2,447.20

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Solution

The fourth proportional to 6,609.15, 9,913.21 and 2,447.20 is: 3,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.15 : 9,913.21 = 2,447.20 : x
  2. Step 2: Convert to fraction form
    6,609.15/9,913.21 = 2,447.20/x
  3. Step 3: Cross multiply
    6,609.15x = 9,913.21 × 2,447.20
  4. Step 4: Simplify right side
    6,609.15x = 24,259,607.51
  5. Step 5: Solve for x
    x = 24,259,607.51/6,609.15
  6. Step 6: Final answer
    x = 3,670.61

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Double scale
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Similar ratio
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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.