Home / 3,815.36-5,265.92-2,556.80

Finding the Fourth Proportional to 3,815.36, 5,265.92 and 2,556.80

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Solution

The fourth proportional to 3,815.36, 5,265.92 and 2,556.80 is: 3,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.36 : 5,265.92 = 2,556.80 : x
  2. Step 2: Convert to fraction form
    3,815.36/5,265.92 = 2,556.80/x
  3. Step 3: Cross multiply
    3,815.36x = 5,265.92 × 2,556.80
  4. Step 4: Simplify right side
    3,815.36x = 13,463,904.26
  5. Step 5: Solve for x
    x = 13,463,904.26/3,815.36
  6. Step 6: Final answer
    x = 3,528.87

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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.