Home / 2,218.85-3,322.58-2,153.15

Finding the Fourth Proportional to 2,218.85, 3,322.58 and 2,153.15

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Solution

The fourth proportional to 2,218.85, 3,322.58 and 2,153.15 is: 3,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.85 : 3,322.58 = 2,153.15 : x
  2. Step 2: Convert to fraction form
    2,218.85/3,322.58 = 2,153.15/x
  3. Step 3: Cross multiply
    2,218.85x = 3,322.58 × 2,153.15
  4. Step 4: Simplify right side
    2,218.85x = 7,154,002.36
  5. Step 5: Solve for x
    x = 7,154,002.36/2,218.85
  6. Step 6: Final answer
    x = 3,224.20

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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.