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Finding the Fourth Proportional to 3,928.98, 5,893.54 and 3,145.34

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Solution

The fourth proportional to 3,928.98, 5,893.54 and 3,145.34 is: 4,718.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.98 : 5,893.54 = 3,145.34 : x
  2. Step 2: Convert to fraction form
    3,928.98/5,893.54 = 3,145.34/x
  3. Step 3: Cross multiply
    3,928.98x = 5,893.54 × 3,145.34
  4. Step 4: Simplify right side
    3,928.98x = 18,537,187.10
  5. Step 5: Solve for x
    x = 18,537,187.10/3,928.98
  6. Step 6: Final answer
    x = 4,718.07

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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.