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Finding the Fourth Proportional to 3,751.14, 5,626.71 and 977.81

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Solution

The fourth proportional to 3,751.14, 5,626.71 and 977.81 is: 1,466.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.14 : 5,626.71 = 977.81 : x
  2. Step 2: Convert to fraction form
    3,751.14/5,626.71 = 977.81/x
  3. Step 3: Cross multiply
    3,751.14x = 5,626.71 × 977.81
  4. Step 4: Simplify right side
    3,751.14x = 5,501,825.17
  5. Step 5: Solve for x
    x = 5,501,825.17/3,751.14
  6. Step 6: Final answer
    x = 1,466.71

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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.