Home / 2,820.50-3,892.70-1,641.95

Finding the Fourth Proportional to 2,820.50, 3,892.70 and 1,641.95

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Solution

The fourth proportional to 2,820.50, 3,892.70 and 1,641.95 is: 2,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.50 : 3,892.70 = 1,641.95 : x
  2. Step 2: Convert to fraction form
    2,820.50/3,892.70 = 1,641.95/x
  3. Step 3: Cross multiply
    2,820.50x = 3,892.70 × 1,641.95
  4. Step 4: Simplify right side
    2,820.50x = 6,391,620.29
  5. Step 5: Solve for x
    x = 6,391,620.29/2,820.50
  6. Step 6: Final answer
    x = 2,266.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.