Home / 2,820.15-3,892.02-1,641.13

Finding the Fourth Proportional to 2,820.15, 3,892.02 and 1,641.13

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Solution

The fourth proportional to 2,820.15, 3,892.02 and 1,641.13 is: 2,264.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.15 : 3,892.02 = 1,641.13 : x
  2. Step 2: Convert to fraction form
    2,820.15/3,892.02 = 1,641.13/x
  3. Step 3: Cross multiply
    2,820.15x = 3,892.02 × 1,641.13
  4. Step 4: Simplify right side
    2,820.15x = 6,387,310.78
  5. Step 5: Solve for x
    x = 6,387,310.78/2,820.15
  6. Step 6: Final answer
    x = 2,264.88

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1.5x scale

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.