Home / 2,815.09-3,885.09-1,556.44

Finding the Fourth Proportional to 2,815.09, 3,885.09 and 1,556.44

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Solution

The fourth proportional to 2,815.09, 3,885.09 and 1,556.44 is: 2,148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.09 : 3,885.09 = 1,556.44 : x
  2. Step 2: Convert to fraction form
    2,815.09/3,885.09 = 1,556.44/x
  3. Step 3: Cross multiply
    2,815.09x = 3,885.09 × 1,556.44
  4. Step 4: Simplify right side
    2,815.09x = 6,046,909.48
  5. Step 5: Solve for x
    x = 6,046,909.48/2,815.09
  6. Step 6: Final answer
    x = 2,148.03

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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.