Home / 2,213.14-3,298.88-2,142.40

Finding the Fourth Proportional to 2,213.14, 3,298.88 and 2,142.40

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Solution

The fourth proportional to 2,213.14, 3,298.88 and 2,142.40 is: 3,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.14 : 3,298.88 = 2,142.40 : x
  2. Step 2: Convert to fraction form
    2,213.14/3,298.88 = 2,142.40/x
  3. Step 3: Cross multiply
    2,213.14x = 3,298.88 × 2,142.40
  4. Step 4: Simplify right side
    2,213.14x = 7,067,520.51
  5. Step 5: Solve for x
    x = 7,067,520.51/2,213.14
  6. Step 6: Final answer
    x = 3,193.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.