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Finding the Fourth Proportional to 3,750.85, 5,621.71 and 2,655.53

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Solution

The fourth proportional to 3,750.85, 5,621.71 and 2,655.53 is: 3,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.85 : 5,621.71 = 2,655.53 : x
  2. Step 2: Convert to fraction form
    3,750.85/5,621.71 = 2,655.53/x
  3. Step 3: Cross multiply
    3,750.85x = 5,621.71 × 2,655.53
  4. Step 4: Simplify right side
    3,750.85x = 14,928,619.56
  5. Step 5: Solve for x
    x = 14,928,619.56/3,750.85
  6. Step 6: Final answer
    x = 3,980.06

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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.