Home / 2,280.11-3,420.17-636.70

Finding the Fourth Proportional to 2,280.11, 3,420.17 and 636.70

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Solution

The fourth proportional to 2,280.11, 3,420.17 and 636.70 is: 955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.11 : 3,420.17 = 636.70 : x
  2. Step 2: Convert to fraction form
    2,280.11/3,420.17 = 636.70/x
  3. Step 3: Cross multiply
    2,280.11x = 3,420.17 × 636.70
  4. Step 4: Simplify right side
    2,280.11x = 2,177,610.51
  5. Step 5: Solve for x
    x = 2,177,610.51/2,280.11
  6. Step 6: Final answer
    x = 955.05

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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.