Home / 2,777.82-3,823.65-2,515.38

Finding the Fourth Proportional to 2,777.82, 3,823.65 and 2,515.38

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Solution

The fourth proportional to 2,777.82, 3,823.65 and 2,515.38 is: 3,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.82 : 3,823.65 = 2,515.38 : x
  2. Step 2: Convert to fraction form
    2,777.82/3,823.65 = 2,515.38/x
  3. Step 3: Cross multiply
    2,777.82x = 3,823.65 × 2,515.38
  4. Step 4: Simplify right side
    2,777.82x = 9,617,932.74
  5. Step 5: Solve for x
    x = 9,617,932.74/2,777.82
  6. Step 6: Final answer
    x = 3,462.40

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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.