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Finding the Fourth Proportional to 3,810.70, 5,699.65 and 3,391.53

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Solution

The fourth proportional to 3,810.70, 5,699.65 and 3,391.53 is: 5,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.70 : 5,699.65 = 3,391.53 : x
  2. Step 2: Convert to fraction form
    3,810.70/5,699.65 = 3,391.53/x
  3. Step 3: Cross multiply
    3,810.70x = 5,699.65 × 3,391.53
  4. Step 4: Simplify right side
    3,810.70x = 19,330,533.96
  5. Step 5: Solve for x
    x = 19,330,533.96/3,810.70
  6. Step 6: Final answer
    x = 5,072.70

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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.