Home / 2,775.24-3,828.60-2,145.96

Finding the Fourth Proportional to 2,775.24, 3,828.60 and 2,145.96

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Solution

The fourth proportional to 2,775.24, 3,828.60 and 2,145.96 is: 2,960.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.24 : 3,828.60 = 2,145.96 : x
  2. Step 2: Convert to fraction form
    2,775.24/3,828.60 = 2,145.96/x
  3. Step 3: Cross multiply
    2,775.24x = 3,828.60 × 2,145.96
  4. Step 4: Simplify right side
    2,775.24x = 8,216,022.46
  5. Step 5: Solve for x
    x = 8,216,022.46/2,775.24
  6. Step 6: Final answer
    x = 2,960.47

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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.