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Finding the Fourth Proportional to 8,630.96, 12,944.21 and 2,391.53

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Solution

The fourth proportional to 8,630.96, 12,944.21 and 2,391.53 is: 3,586.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.96 : 12,944.21 = 2,391.53 : x
  2. Step 2: Convert to fraction form
    8,630.96/12,944.21 = 2,391.53/x
  3. Step 3: Cross multiply
    8,630.96x = 12,944.21 × 2,391.53
  4. Step 4: Simplify right side
    8,630.96x = 30,956,389.86
  5. Step 5: Solve for x
    x = 30,956,389.86/8,630.96
  6. Step 6: Final answer
    x = 3,586.67

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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.