Home / 3,885.30-5,821.47-2,728.98

Finding the Fourth Proportional to 3,885.30, 5,821.47 and 2,728.98

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Solution

The fourth proportional to 3,885.30, 5,821.47 and 2,728.98 is: 4,088.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.30 : 5,821.47 = 2,728.98 : x
  2. Step 2: Convert to fraction form
    3,885.30/5,821.47 = 2,728.98/x
  3. Step 3: Cross multiply
    3,885.30x = 5,821.47 × 2,728.98
  4. Step 4: Simplify right side
    3,885.30x = 15,886,675.20
  5. Step 5: Solve for x
    x = 15,886,675.20/3,885.30
  6. Step 6: Final answer
    x = 4,088.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.