Home / 3,868.80-5,788.80-2,572.80

Finding the Fourth Proportional to 3,868.80, 5,788.80 and 2,572.80

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Solution

The fourth proportional to 3,868.80, 5,788.80 and 2,572.80 is: 3,849.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.80 : 5,788.80 = 2,572.80 : x
  2. Step 2: Convert to fraction form
    3,868.80/5,788.80 = 2,572.80/x
  3. Step 3: Cross multiply
    3,868.80x = 5,788.80 × 2,572.80
  4. Step 4: Simplify right side
    3,868.80x = 14,893,424.64
  5. Step 5: Solve for x
    x = 14,893,424.64/3,868.80
  6. Step 6: Final answer
    x = 3,849.62

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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.