Home / 2,320.38-3,202.93-1,388.88

Finding the Fourth Proportional to 2,320.38, 3,202.93 and 1,388.88

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Solution

The fourth proportional to 2,320.38, 3,202.93 and 1,388.88 is: 1,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.38 : 3,202.93 = 1,388.88 : x
  2. Step 2: Convert to fraction form
    2,320.38/3,202.93 = 1,388.88/x
  3. Step 3: Cross multiply
    2,320.38x = 3,202.93 × 1,388.88
  4. Step 4: Simplify right side
    2,320.38x = 4,448,485.42
  5. Step 5: Solve for x
    x = 4,448,485.42/2,320.38
  6. Step 6: Final answer
    x = 1,917.14

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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.