Home / 3,894.68-5,374.47-2,215.93

Finding the Fourth Proportional to 3,894.68, 5,374.47 and 2,215.93

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Solution

The fourth proportional to 3,894.68, 5,374.47 and 2,215.93 is: 3,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.68 : 5,374.47 = 2,215.93 : x
  2. Step 2: Convert to fraction form
    3,894.68/5,374.47 = 2,215.93/x
  3. Step 3: Cross multiply
    3,894.68x = 5,374.47 × 2,215.93
  4. Step 4: Simplify right side
    3,894.68x = 11,909,438.23
  5. Step 5: Solve for x
    x = 11,909,438.23/3,894.68
  6. Step 6: Final answer
    x = 3,057.87

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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.