Home / 3,851.16-5,314.32-2,172.48

Finding the Fourth Proportional to 3,851.16, 5,314.32 and 2,172.48

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Solution

The fourth proportional to 3,851.16, 5,314.32 and 2,172.48 is: 2,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.16 : 5,314.32 = 2,172.48 : x
  2. Step 2: Convert to fraction form
    3,851.16/5,314.32 = 2,172.48/x
  3. Step 3: Cross multiply
    3,851.16x = 5,314.32 × 2,172.48
  4. Step 4: Simplify right side
    3,851.16x = 11,545,253.91
  5. Step 5: Solve for x
    x = 11,545,253.91/3,851.16
  6. Step 6: Final answer
    x = 2,997.86

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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.