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Finding the Fourth Proportional to 3,945.17, 5,916.54 and 1,347.50

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Solution

The fourth proportional to 3,945.17, 5,916.54 and 1,347.50 is: 2,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.17 : 5,916.54 = 1,347.50 : x
  2. Step 2: Convert to fraction form
    3,945.17/5,916.54 = 1,347.50/x
  3. Step 3: Cross multiply
    3,945.17x = 5,916.54 × 1,347.50
  4. Step 4: Simplify right side
    3,945.17x = 7,972,537.65
  5. Step 5: Solve for x
    x = 7,972,537.65/3,945.17
  6. Step 6: Final answer
    x = 2,020.84

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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.