Home / 5,209.25-7,188.77-2,851.45

Finding the Fourth Proportional to 5,209.25, 7,188.77 and 2,851.45

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Solution

The fourth proportional to 5,209.25, 7,188.77 and 2,851.45 is: 3,935.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.25 : 7,188.77 = 2,851.45 : x
  2. Step 2: Convert to fraction form
    5,209.25/7,188.77 = 2,851.45/x
  3. Step 3: Cross multiply
    5,209.25x = 7,188.77 × 2,851.45
  4. Step 4: Simplify right side
    5,209.25x = 20,498,418.22
  5. Step 5: Solve for x
    x = 20,498,418.22/5,209.25
  6. Step 6: Final answer
    x = 3,935.00

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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.