Home / 5,209.21-7,188.67-2,851.35

Finding the Fourth Proportional to 5,209.21, 7,188.67 and 2,851.35

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Solution

The fourth proportional to 5,209.21, 7,188.67 and 2,851.35 is: 3,934.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.21 : 7,188.67 = 2,851.35 : x
  2. Step 2: Convert to fraction form
    5,209.21/7,188.67 = 2,851.35/x
  3. Step 3: Cross multiply
    5,209.21x = 7,188.67 × 2,851.35
  4. Step 4: Simplify right side
    5,209.21x = 20,497,414.20
  5. Step 5: Solve for x
    x = 20,497,414.20/5,209.21
  6. Step 6: Final answer
    x = 3,934.84

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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.