Home / 5,209.16-7,188.74-2,851.31

Finding the Fourth Proportional to 5,209.16, 7,188.74 and 2,851.31

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Solution

The fourth proportional to 5,209.16, 7,188.74 and 2,851.31 is: 3,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.16 : 7,188.74 = 2,851.31 : x
  2. Step 2: Convert to fraction form
    5,209.16/7,188.74 = 2,851.31/x
  3. Step 3: Cross multiply
    5,209.16x = 7,188.74 × 2,851.31
  4. Step 4: Simplify right side
    5,209.16x = 20,497,276.05
  5. Step 5: Solve for x
    x = 20,497,276.05/5,209.16
  6. Step 6: Final answer
    x = 3,934.86

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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.