Home / 3,882.12-5,357.18-2,113.68

Finding the Fourth Proportional to 3,882.12, 5,357.18 and 2,113.68

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Solution

The fourth proportional to 3,882.12, 5,357.18 and 2,113.68 is: 2,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.12 : 5,357.18 = 2,113.68 : x
  2. Step 2: Convert to fraction form
    3,882.12/5,357.18 = 2,113.68/x
  3. Step 3: Cross multiply
    3,882.12x = 5,357.18 × 2,113.68
  4. Step 4: Simplify right side
    3,882.12x = 11,323,364.22
  5. Step 5: Solve for x
    x = 11,323,364.22/3,882.12
  6. Step 6: Final answer
    x = 2,916.80

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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.