Home / 2,775.64-3,830.52-1,728.04

Finding the Fourth Proportional to 2,775.64, 3,830.52 and 1,728.04

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Solution

The fourth proportional to 2,775.64, 3,830.52 and 1,728.04 is: 2,384.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.64 : 3,830.52 = 1,728.04 : x
  2. Step 2: Convert to fraction form
    2,775.64/3,830.52 = 1,728.04/x
  3. Step 3: Cross multiply
    2,775.64x = 3,830.52 × 1,728.04
  4. Step 4: Simplify right side
    2,775.64x = 6,619,291.78
  5. Step 5: Solve for x
    x = 6,619,291.78/2,775.64
  6. Step 6: Final answer
    x = 2,384.78

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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.