Home / 5,187.78-7,159.11-2,830.02

Finding the Fourth Proportional to 5,187.78, 7,159.11 and 2,830.02

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Solution

The fourth proportional to 5,187.78, 7,159.11 and 2,830.02 is: 3,905.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.78 : 7,159.11 = 2,830.02 : x
  2. Step 2: Convert to fraction form
    5,187.78/7,159.11 = 2,830.02/x
  3. Step 3: Cross multiply
    5,187.78x = 7,159.11 × 2,830.02
  4. Step 4: Simplify right side
    5,187.78x = 20,260,424.48
  5. Step 5: Solve for x
    x = 20,260,424.48/5,187.78
  6. Step 6: Final answer
    x = 3,905.41

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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.