Home / 2,824.25-3,897.87-1,645.70

Finding the Fourth Proportional to 2,824.25, 3,897.87 and 1,645.70

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Solution

The fourth proportional to 2,824.25, 3,897.87 and 1,645.70 is: 2,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.25 : 3,897.87 = 1,645.70 : x
  2. Step 2: Convert to fraction form
    2,824.25/3,897.87 = 1,645.70/x
  3. Step 3: Cross multiply
    2,824.25x = 3,897.87 × 1,645.70
  4. Step 4: Simplify right side
    2,824.25x = 6,414,724.66
  5. Step 5: Solve for x
    x = 6,414,724.66/2,824.25
  6. Step 6: Final answer
    x = 2,271.30

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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.