Home / 3,871.86-5,342.78-2,192.93

Finding the Fourth Proportional to 3,871.86, 5,342.78 and 2,192.93

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Solution

The fourth proportional to 3,871.86, 5,342.78 and 2,192.93 is: 3,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.86 : 5,342.78 = 2,192.93 : x
  2. Step 2: Convert to fraction form
    3,871.86/5,342.78 = 2,192.93/x
  3. Step 3: Cross multiply
    3,871.86x = 5,342.78 × 2,192.93
  4. Step 4: Simplify right side
    3,871.86x = 11,716,318.22
  5. Step 5: Solve for x
    x = 11,716,318.22/3,871.86
  6. Step 6: Final answer
    x = 3,026.02

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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.