Home / 5,208.68-7,188.10-2,851.20

Finding the Fourth Proportional to 5,208.68, 7,188.10 and 2,851.20

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Solution

The fourth proportional to 5,208.68, 7,188.10 and 2,851.20 is: 3,934.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.68 : 7,188.10 = 2,851.20 : x
  2. Step 2: Convert to fraction form
    5,208.68/7,188.10 = 2,851.20/x
  3. Step 3: Cross multiply
    5,208.68x = 7,188.10 × 2,851.20
  4. Step 4: Simplify right side
    5,208.68x = 20,494,710.72
  5. Step 5: Solve for x
    x = 20,494,710.72/5,208.68
  6. Step 6: Final answer
    x = 3,934.72

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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.