Home / 5,209.02-7,189.79-3,218.43

Finding the Fourth Proportional to 5,209.02, 7,189.79 and 3,218.43

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Solution

The fourth proportional to 5,209.02, 7,189.79 and 3,218.43 is: 4,442.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.02 : 7,189.79 = 3,218.43 : x
  2. Step 2: Convert to fraction form
    5,209.02/7,189.79 = 3,218.43/x
  3. Step 3: Cross multiply
    5,209.02x = 7,189.79 × 3,218.43
  4. Step 4: Simplify right side
    5,209.02x = 23,139,846.70
  5. Step 5: Solve for x
    x = 23,139,846.70/5,209.02
  6. Step 6: Final answer
    x = 4,442.26

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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.