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Finding the Fourth Proportional to 3,487.79, 4,813.26 and 1,916.03

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Solution

The fourth proportional to 3,487.79, 4,813.26 and 1,916.03 is: 2,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.79 : 4,813.26 = 1,916.03 : x
  2. Step 2: Convert to fraction form
    3,487.79/4,813.26 = 1,916.03/x
  3. Step 3: Cross multiply
    3,487.79x = 4,813.26 × 1,916.03
  4. Step 4: Simplify right side
    3,487.79x = 9,222,350.56
  5. Step 5: Solve for x
    x = 9,222,350.56/3,487.79
  6. Step 6: Final answer
    x = 2,644.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.