Home / 3,747.71-5,172.75-2,255.35

Finding the Fourth Proportional to 3,747.71, 5,172.75 and 2,255.35

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Solution

The fourth proportional to 3,747.71, 5,172.75 and 2,255.35 is: 3,112.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.71 : 5,172.75 = 2,255.35 : x
  2. Step 2: Convert to fraction form
    3,747.71/5,172.75 = 2,255.35/x
  3. Step 3: Cross multiply
    3,747.71x = 5,172.75 × 2,255.35
  4. Step 4: Simplify right side
    3,747.71x = 11,666,361.71
  5. Step 5: Solve for x
    x = 11,666,361.71/3,747.71
  6. Step 6: Final answer
    x = 3,112.93

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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.