Home / 5,445.23-8,168.45-1,981.67

Finding the Fourth Proportional to 5,445.23, 8,168.45 and 1,981.67

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Solution

The fourth proportional to 5,445.23, 8,168.45 and 1,981.67 is: 2,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.23 : 8,168.45 = 1,981.67 : x
  2. Step 2: Convert to fraction form
    5,445.23/8,168.45 = 1,981.67/x
  3. Step 3: Cross multiply
    5,445.23x = 8,168.45 × 1,981.67
  4. Step 4: Simplify right side
    5,445.23x = 16,187,121.56
  5. Step 5: Solve for x
    x = 16,187,121.56/5,445.23
  6. Step 6: Final answer
    x = 2,972.72

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Half scale
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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.