Home / 3,179.64-4,388.04-1,782.38

Finding the Fourth Proportional to 3,179.64, 4,388.04 and 1,782.38

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Solution

The fourth proportional to 3,179.64, 4,388.04 and 1,782.38 is: 2,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.64 : 4,388.04 = 1,782.38 : x
  2. Step 2: Convert to fraction form
    3,179.64/4,388.04 = 1,782.38/x
  3. Step 3: Cross multiply
    3,179.64x = 4,388.04 × 1,782.38
  4. Step 4: Simplify right side
    3,179.64x = 7,821,154.74
  5. Step 5: Solve for x
    x = 7,821,154.74/3,179.64
  6. Step 6: Final answer
    x = 2,459.76

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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.