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Finding the Fourth Proportional to 3,321.62, 4,983.26 and 981.62

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Solution

The fourth proportional to 3,321.62, 4,983.26 and 981.62 is: 1,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.62 : 4,983.26 = 981.62 : x
  2. Step 2: Convert to fraction form
    3,321.62/4,983.26 = 981.62/x
  3. Step 3: Cross multiply
    3,321.62x = 4,983.26 × 981.62
  4. Step 4: Simplify right side
    3,321.62x = 4,891,637.86
  5. Step 5: Solve for x
    x = 4,891,637.86/3,321.62
  6. Step 6: Final answer
    x = 1,472.67

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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.