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Finding the Fourth Proportional to 3,411.87, 5,111.02 and 2,629.15

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Solution

The fourth proportional to 3,411.87, 5,111.02 and 2,629.15 is: 3,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.87 : 5,111.02 = 2,629.15 : x
  2. Step 2: Convert to fraction form
    3,411.87/5,111.02 = 2,629.15/x
  3. Step 3: Cross multiply
    3,411.87x = 5,111.02 × 2,629.15
  4. Step 4: Simplify right side
    3,411.87x = 13,437,628.74
  5. Step 5: Solve for x
    x = 13,437,628.74/3,411.87
  6. Step 6: Final answer
    x = 3,938.50

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1.5x scale

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.