Home / 3,679.66-5,077.78-2,107.45

Finding the Fourth Proportional to 3,679.66, 5,077.78 and 2,107.45

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Solution

The fourth proportional to 3,679.66, 5,077.78 and 2,107.45 is: 2,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.66 : 5,077.78 = 2,107.45 : x
  2. Step 2: Convert to fraction form
    3,679.66/5,077.78 = 2,107.45/x
  3. Step 3: Cross multiply
    3,679.66x = 5,077.78 × 2,107.45
  4. Step 4: Simplify right side
    3,679.66x = 10,701,167.46
  5. Step 5: Solve for x
    x = 10,701,167.46/3,679.66
  6. Step 6: Final answer
    x = 2,908.19

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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.