Home / 2,824.40-3,897.60-1,629.60

Finding the Fourth Proportional to 2,824.40, 3,897.60 and 1,629.60

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Solution

The fourth proportional to 2,824.40, 3,897.60 and 1,629.60 is: 2,248.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.40 : 3,897.60 = 1,629.60 : x
  2. Step 2: Convert to fraction form
    2,824.40/3,897.60 = 1,629.60/x
  3. Step 3: Cross multiply
    2,824.40x = 3,897.60 × 1,629.60
  4. Step 4: Simplify right side
    2,824.40x = 6,351,528.96
  5. Step 5: Solve for x
    x = 6,351,528.96/2,824.40
  6. Step 6: Final answer
    x = 2,248.81

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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.