Home / 3,628.56-5,440.44-1,320.08

Finding the Fourth Proportional to 3,628.56, 5,440.44 and 1,320.08

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Solution

The fourth proportional to 3,628.56, 5,440.44 and 1,320.08 is: 1,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.56 : 5,440.44 = 1,320.08 : x
  2. Step 2: Convert to fraction form
    3,628.56/5,440.44 = 1,320.08/x
  3. Step 3: Cross multiply
    3,628.56x = 5,440.44 × 1,320.08
  4. Step 4: Simplify right side
    3,628.56x = 7,181,816.04
  5. Step 5: Solve for x
    x = 7,181,816.04/3,628.56
  6. Step 6: Final answer
    x = 1,979.25

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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.