Home / 5,179.05-7,129.58-4,680.12

Finding the Fourth Proportional to 5,179.05, 7,129.58 and 4,680.12

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Solution

The fourth proportional to 5,179.05, 7,129.58 and 4,680.12 is: 6,442.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.05 : 7,129.58 = 4,680.12 : x
  2. Step 2: Convert to fraction form
    5,179.05/7,129.58 = 4,680.12/x
  3. Step 3: Cross multiply
    5,179.05x = 7,129.58 × 4,680.12
  4. Step 4: Simplify right side
    5,179.05x = 33,367,266.55
  5. Step 5: Solve for x
    x = 33,367,266.55/5,179.05
  6. Step 6: Final answer
    x = 6,442.74

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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.