Home / 5,209.13-7,188.75-2,851.43

Finding the Fourth Proportional to 5,209.13, 7,188.75 and 2,851.43

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Solution

The fourth proportional to 5,209.13, 7,188.75 and 2,851.43 is: 3,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.13 : 7,188.75 = 2,851.43 : x
  2. Step 2: Convert to fraction form
    5,209.13/7,188.75 = 2,851.43/x
  3. Step 3: Cross multiply
    5,209.13x = 7,188.75 × 2,851.43
  4. Step 4: Simplify right side
    5,209.13x = 20,498,181.47
  5. Step 5: Solve for x
    x = 20,498,181.47/5,209.13
  6. Step 6: Final answer
    x = 3,935.05

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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.