Home / 2,620.78-3,911.96-2,276.53

Finding the Fourth Proportional to 2,620.78, 3,911.96 and 2,276.53

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Solution

The fourth proportional to 2,620.78, 3,911.96 and 2,276.53 is: 3,398.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.78 : 3,911.96 = 2,276.53 : x
  2. Step 2: Convert to fraction form
    2,620.78/3,911.96 = 2,276.53/x
  3. Step 3: Cross multiply
    2,620.78x = 3,911.96 × 2,276.53
  4. Step 4: Simplify right side
    2,620.78x = 8,905,690.21
  5. Step 5: Solve for x
    x = 8,905,690.21/2,620.78
  6. Step 6: Final answer
    x = 3,398.11

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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.