Home / 5,209.68-7,188.90-2,851.80

Finding the Fourth Proportional to 5,209.68, 7,188.90 and 2,851.80

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Solution

The fourth proportional to 5,209.68, 7,188.90 and 2,851.80 is: 3,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.68 : 7,188.90 = 2,851.80 : x
  2. Step 2: Convert to fraction form
    5,209.68/7,188.90 = 2,851.80/x
  3. Step 3: Cross multiply
    5,209.68x = 7,188.90 × 2,851.80
  4. Step 4: Simplify right side
    5,209.68x = 20,501,305.02
  5. Step 5: Solve for x
    x = 20,501,305.02/5,209.68
  6. Step 6: Final answer
    x = 3,935.23

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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.