Home / 5,200.64-7,176.80-2,842.72

Finding the Fourth Proportional to 5,200.64, 7,176.80 and 2,842.72

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Solution

The fourth proportional to 5,200.64, 7,176.80 and 2,842.72 is: 3,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,200.64 : 7,176.80 = 2,842.72 : x
  2. Step 2: Convert to fraction form
    5,200.64/7,176.80 = 2,842.72/x
  3. Step 3: Cross multiply
    5,200.64x = 7,176.80 × 2,842.72
  4. Step 4: Simplify right side
    5,200.64x = 20,401,632.90
  5. Step 5: Solve for x
    x = 20,401,632.90/5,200.64
  6. Step 6: Final answer
    x = 3,922.91

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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.