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Finding the Fourth Proportional to 2,213.99, 3,320.48 and 654.11

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Solution

The fourth proportional to 2,213.99, 3,320.48 and 654.11 is: 981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.99 : 3,320.48 = 654.11 : x
  2. Step 2: Convert to fraction form
    2,213.99/3,320.48 = 654.11/x
  3. Step 3: Cross multiply
    2,213.99x = 3,320.48 × 654.11
  4. Step 4: Simplify right side
    2,213.99x = 2,171,944.21
  5. Step 5: Solve for x
    x = 2,171,944.21/2,213.99
  6. Step 6: Final answer
    x = 981.01

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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.