Home / 3,555.19-4,905.33-2,138.41

Finding the Fourth Proportional to 3,555.19, 4,905.33 and 2,138.41

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Solution

The fourth proportional to 3,555.19, 4,905.33 and 2,138.41 is: 2,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.19 : 4,905.33 = 2,138.41 : x
  2. Step 2: Convert to fraction form
    3,555.19/4,905.33 = 2,138.41/x
  3. Step 3: Cross multiply
    3,555.19x = 4,905.33 × 2,138.41
  4. Step 4: Simplify right side
    3,555.19x = 10,489,606.73
  5. Step 5: Solve for x
    x = 10,489,606.73/3,555.19
  6. Step 6: Final answer
    x = 2,950.51

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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.