Home / 2,278.17-3,421.80-2,203.44

Finding the Fourth Proportional to 2,278.17, 3,421.80 and 2,203.44

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Solution

The fourth proportional to 2,278.17, 3,421.80 and 2,203.44 is: 3,309.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.17 : 3,421.80 = 2,203.44 : x
  2. Step 2: Convert to fraction form
    2,278.17/3,421.80 = 2,203.44/x
  3. Step 3: Cross multiply
    2,278.17x = 3,421.80 × 2,203.44
  4. Step 4: Simplify right side
    2,278.17x = 7,539,730.99
  5. Step 5: Solve for x
    x = 7,539,730.99/2,278.17
  6. Step 6: Final answer
    x = 3,309.56

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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.