Home / 2,824.68-3,897.28-1,645.60

Finding the Fourth Proportional to 2,824.68, 3,897.28 and 1,645.60

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Solution

The fourth proportional to 2,824.68, 3,897.28 and 1,645.60 is: 2,270.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.68 : 3,897.28 = 1,645.60 : x
  2. Step 2: Convert to fraction form
    2,824.68/3,897.28 = 1,645.60/x
  3. Step 3: Cross multiply
    2,824.68x = 3,897.28 × 1,645.60
  4. Step 4: Simplify right side
    2,824.68x = 6,413,363.97
  5. Step 5: Solve for x
    x = 6,413,363.97/2,824.68
  6. Step 6: Final answer
    x = 2,270.47

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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.