Home / 3,943.86-5,442.32-2,175.12

Finding the Fourth Proportional to 3,943.86, 5,442.32 and 2,175.12

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Solution

The fourth proportional to 3,943.86, 5,442.32 and 2,175.12 is: 3,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.86 : 5,442.32 = 2,175.12 : x
  2. Step 2: Convert to fraction form
    3,943.86/5,442.32 = 2,175.12/x
  3. Step 3: Cross multiply
    3,943.86x = 5,442.32 × 2,175.12
  4. Step 4: Simplify right side
    3,943.86x = 11,837,688.20
  5. Step 5: Solve for x
    x = 11,837,688.20/3,943.86
  6. Step 6: Final answer
    x = 3,001.55

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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.