Home / 5,208.80-7,815.68-2,613.56

Finding the Fourth Proportional to 5,208.80, 7,815.68 and 2,613.56

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Solution

The fourth proportional to 5,208.80, 7,815.68 and 2,613.56 is: 3,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.80 : 7,815.68 = 2,613.56 : x
  2. Step 2: Convert to fraction form
    5,208.80/7,815.68 = 2,613.56/x
  3. Step 3: Cross multiply
    5,208.80x = 7,815.68 × 2,613.56
  4. Step 4: Simplify right side
    5,208.80x = 20,426,748.62
  5. Step 5: Solve for x
    x = 20,426,748.62/5,208.80
  6. Step 6: Final answer
    x = 3,921.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.