Home / 3,747.40-5,171.28-2,068.78

Finding the Fourth Proportional to 3,747.40, 5,171.28 and 2,068.78

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Solution

The fourth proportional to 3,747.40, 5,171.28 and 2,068.78 is: 2,854.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.40 : 5,171.28 = 2,068.78 : x
  2. Step 2: Convert to fraction form
    3,747.40/5,171.28 = 2,068.78/x
  3. Step 3: Cross multiply
    3,747.40x = 5,171.28 × 2,068.78
  4. Step 4: Simplify right side
    3,747.40x = 10,698,240.64
  5. Step 5: Solve for x
    x = 10,698,240.64/3,747.40
  6. Step 6: Final answer
    x = 2,854.84

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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.