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Finding the Fourth Proportional to 2,505.02, 3,757.74 and 860.90

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Solution

The fourth proportional to 2,505.02, 3,757.74 and 860.90 is: 1,291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.02 : 3,757.74 = 860.90 : x
  2. Step 2: Convert to fraction form
    2,505.02/3,757.74 = 860.90/x
  3. Step 3: Cross multiply
    2,505.02x = 3,757.74 × 860.90
  4. Step 4: Simplify right side
    2,505.02x = 3,235,038.37
  5. Step 5: Solve for x
    x = 3,235,038.37/2,505.02
  6. Step 6: Final answer
    x = 1,291.42

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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.