Home / 2,845.80-3,929.76-2,257.56

Finding the Fourth Proportional to 2,845.80, 3,929.76 and 2,257.56

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Solution

The fourth proportional to 2,845.80, 3,929.76 and 2,257.56 is: 3,117.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.80 : 3,929.76 = 2,257.56 : x
  2. Step 2: Convert to fraction form
    2,845.80/3,929.76 = 2,257.56/x
  3. Step 3: Cross multiply
    2,845.80x = 3,929.76 × 2,257.56
  4. Step 4: Simplify right side
    2,845.80x = 8,871,668.99
  5. Step 5: Solve for x
    x = 8,871,668.99/2,845.80
  6. Step 6: Final answer
    x = 3,117.46

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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.