Home / 2,605.30-3,905.21-1,618.11

Finding the Fourth Proportional to 2,605.30, 3,905.21 and 1,618.11

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Solution

The fourth proportional to 2,605.30, 3,905.21 and 1,618.11 is: 2,425.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.30 : 3,905.21 = 1,618.11 : x
  2. Step 2: Convert to fraction form
    2,605.30/3,905.21 = 1,618.11/x
  3. Step 3: Cross multiply
    2,605.30x = 3,905.21 × 1,618.11
  4. Step 4: Simplify right side
    2,605.30x = 6,319,063.40
  5. Step 5: Solve for x
    x = 6,319,063.40/2,605.30
  6. Step 6: Final answer
    x = 2,425.47

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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.