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Finding the Fourth Proportional to 3,901.46, 5,388.58 and 3,107.46

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Solution

The fourth proportional to 3,901.46, 5,388.58 and 3,107.46 is: 4,291.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.46 : 5,388.58 = 3,107.46 : x
  2. Step 2: Convert to fraction form
    3,901.46/5,388.58 = 3,107.46/x
  3. Step 3: Cross multiply
    3,901.46x = 5,388.58 × 3,107.46
  4. Step 4: Simplify right side
    3,901.46x = 16,744,796.81
  5. Step 5: Solve for x
    x = 16,744,796.81/3,901.46
  6. Step 6: Final answer
    x = 4,291.93

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1.5x scale

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.