Home / 3,749.66-5,175.20-2,156.18

Finding the Fourth Proportional to 3,749.66, 5,175.20 and 2,156.18

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Solution

The fourth proportional to 3,749.66, 5,175.20 and 2,156.18 is: 2,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.66 : 5,175.20 = 2,156.18 : x
  2. Step 2: Convert to fraction form
    3,749.66/5,175.20 = 2,156.18/x
  3. Step 3: Cross multiply
    3,749.66x = 5,175.20 × 2,156.18
  4. Step 4: Simplify right side
    3,749.66x = 11,158,664.89
  5. Step 5: Solve for x
    x = 11,158,664.89/3,749.66
  6. Step 6: Final answer
    x = 2,975.91

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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.