Home / 3,427.20-5,138.64-1,784.28

Finding the Fourth Proportional to 3,427.20, 5,138.64 and 1,784.28

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Solution

The fourth proportional to 3,427.20, 5,138.64 and 1,784.28 is: 2,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.20 : 5,138.64 = 1,784.28 : x
  2. Step 2: Convert to fraction form
    3,427.20/5,138.64 = 1,784.28/x
  3. Step 3: Cross multiply
    3,427.20x = 5,138.64 × 1,784.28
  4. Step 4: Simplify right side
    3,427.20x = 9,168,772.58
  5. Step 5: Solve for x
    x = 9,168,772.58/3,427.20
  6. Step 6: Final answer
    x = 2,675.30

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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.