Home / 2,605.40-3,905.37-1,874.58

Finding the Fourth Proportional to 2,605.40, 3,905.37 and 1,874.58

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Solution

The fourth proportional to 2,605.40, 3,905.37 and 1,874.58 is: 2,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.40 : 3,905.37 = 1,874.58 : x
  2. Step 2: Convert to fraction form
    2,605.40/3,905.37 = 1,874.58/x
  3. Step 3: Cross multiply
    2,605.40x = 3,905.37 × 1,874.58
  4. Step 4: Simplify right side
    2,605.40x = 7,320,928.49
  5. Step 5: Solve for x
    x = 7,320,928.49/2,605.40
  6. Step 6: Final answer
    x = 2,809.91

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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.