Home / 5,181.78-7,151.02-2,824.08

Finding the Fourth Proportional to 5,181.78, 7,151.02 and 2,824.08

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Solution

The fourth proportional to 5,181.78, 7,151.02 and 2,824.08 is: 3,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.78 : 7,151.02 = 2,824.08 : x
  2. Step 2: Convert to fraction form
    5,181.78/7,151.02 = 2,824.08/x
  3. Step 3: Cross multiply
    5,181.78x = 7,151.02 × 2,824.08
  4. Step 4: Simplify right side
    5,181.78x = 20,195,052.56
  5. Step 5: Solve for x
    x = 20,195,052.56/5,181.78
  6. Step 6: Final answer
    x = 3,897.32

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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.