Home / 2,580.54-3,556.71-1,872.78

Finding the Fourth Proportional to 2,580.54, 3,556.71 and 1,872.78

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Solution

The fourth proportional to 2,580.54, 3,556.71 and 1,872.78 is: 2,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.54 : 3,556.71 = 1,872.78 : x
  2. Step 2: Convert to fraction form
    2,580.54/3,556.71 = 1,872.78/x
  3. Step 3: Cross multiply
    2,580.54x = 3,556.71 × 1,872.78
  4. Step 4: Simplify right side
    2,580.54x = 6,660,935.35
  5. Step 5: Solve for x
    x = 6,660,935.35/2,580.54
  6. Step 6: Final answer
    x = 2,581.22

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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.