Home / 2,579.85-3,870.05-1,605.15

Finding the Fourth Proportional to 2,579.85, 3,870.05 and 1,605.15

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Solution

The fourth proportional to 2,579.85, 3,870.05 and 1,605.15 is: 2,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.85 : 3,870.05 = 1,605.15 : x
  2. Step 2: Convert to fraction form
    2,579.85/3,870.05 = 1,605.15/x
  3. Step 3: Cross multiply
    2,579.85x = 3,870.05 × 1,605.15
  4. Step 4: Simplify right side
    2,579.85x = 6,212,002.73
  5. Step 5: Solve for x
    x = 6,212,002.73/2,579.85
  6. Step 6: Final answer
    x = 2,407.89

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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.