Home / 5,114.78-7,659.48-4,192.64

Finding the Fourth Proportional to 5,114.78, 7,659.48 and 4,192.64

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Solution

The fourth proportional to 5,114.78, 7,659.48 and 4,192.64 is: 6,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.78 : 7,659.48 = 4,192.64 : x
  2. Step 2: Convert to fraction form
    5,114.78/7,659.48 = 4,192.64/x
  3. Step 3: Cross multiply
    5,114.78x = 7,659.48 × 4,192.64
  4. Step 4: Simplify right side
    5,114.78x = 32,113,442.23
  5. Step 5: Solve for x
    x = 32,113,442.23/5,114.78
  6. Step 6: Final answer
    x = 6,278.56

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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.