Home / 2,825.10-3,897.99-1,645.47

Finding the Fourth Proportional to 2,825.10, 3,897.99 and 1,645.47

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Solution

The fourth proportional to 2,825.10, 3,897.99 and 1,645.47 is: 2,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.10 : 3,897.99 = 1,645.47 : x
  2. Step 2: Convert to fraction form
    2,825.10/3,897.99 = 1,645.47/x
  3. Step 3: Cross multiply
    2,825.10x = 3,897.99 × 1,645.47
  4. Step 4: Simplify right side
    2,825.10x = 6,414,025.61
  5. Step 5: Solve for x
    x = 6,414,025.61/2,825.10
  6. Step 6: Final answer
    x = 2,270.37

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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.