Home / 3,972.60-5,475.42-3,015.18

Finding the Fourth Proportional to 3,972.60, 5,475.42 and 3,015.18

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Solution

The fourth proportional to 3,972.60, 5,475.42 and 3,015.18 is: 4,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.60 : 5,475.42 = 3,015.18 : x
  2. Step 2: Convert to fraction form
    3,972.60/5,475.42 = 3,015.18/x
  3. Step 3: Cross multiply
    3,972.60x = 5,475.42 × 3,015.18
  4. Step 4: Simplify right side
    3,972.60x = 16,509,376.88
  5. Step 5: Solve for x
    x = 16,509,376.88/3,972.60
  6. Step 6: Final answer
    x = 4,155.81

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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.