Home / 2,820.52-3,892.62-1,641.57

Finding the Fourth Proportional to 2,820.52, 3,892.62 and 1,641.57

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Solution

The fourth proportional to 2,820.52, 3,892.62 and 1,641.57 is: 2,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.52 : 3,892.62 = 1,641.57 : x
  2. Step 2: Convert to fraction form
    2,820.52/3,892.62 = 1,641.57/x
  3. Step 3: Cross multiply
    2,820.52x = 3,892.62 × 1,641.57
  4. Step 4: Simplify right side
    2,820.52x = 6,389,999.77
  5. Step 5: Solve for x
    x = 6,389,999.77/2,820.52
  6. Step 6: Final answer
    x = 2,265.54

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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.