Home / 8,445.19-12,667.78-2,289.19

Finding the Fourth Proportional to 8,445.19, 12,667.78 and 2,289.19

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Solution

The fourth proportional to 8,445.19, 12,667.78 and 2,289.19 is: 3,433.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.19 : 12,667.78 = 2,289.19 : x
  2. Step 2: Convert to fraction form
    8,445.19/12,667.78 = 2,289.19/x
  3. Step 3: Cross multiply
    8,445.19x = 12,667.78 × 2,289.19
  4. Step 4: Simplify right side
    8,445.19x = 28,998,955.30
  5. Step 5: Solve for x
    x = 28,998,955.30/8,445.19
  6. Step 6: Final answer
    x = 3,433.78

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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.