Home / 3,628.20-5,439.56-1,871.32

Finding the Fourth Proportional to 3,628.20, 5,439.56 and 1,871.32

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Solution

The fourth proportional to 3,628.20, 5,439.56 and 1,871.32 is: 2,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.20 : 5,439.56 = 1,871.32 : x
  2. Step 2: Convert to fraction form
    3,628.20/5,439.56 = 1,871.32/x
  3. Step 3: Cross multiply
    3,628.20x = 5,439.56 × 1,871.32
  4. Step 4: Simplify right side
    3,628.20x = 10,179,157.42
  5. Step 5: Solve for x
    x = 10,179,157.42/3,628.20
  6. Step 6: Final answer
    x = 2,805.57

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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.