Home / 2,605.74-3,899.30-2,431.95

Finding the Fourth Proportional to 2,605.74, 3,899.30 and 2,431.95

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Solution

The fourth proportional to 2,605.74, 3,899.30 and 2,431.95 is: 3,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.74 : 3,899.30 = 2,431.95 : x
  2. Step 2: Convert to fraction form
    2,605.74/3,899.30 = 2,431.95/x
  3. Step 3: Cross multiply
    2,605.74x = 3,899.30 × 2,431.95
  4. Step 4: Simplify right side
    2,605.74x = 9,482,890.48
  5. Step 5: Solve for x
    x = 9,482,890.48/2,605.74
  6. Step 6: Final answer
    x = 3,639.23

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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.