Home / 3,869.23-5,339.41-2,100.84

Finding the Fourth Proportional to 3,869.23, 5,339.41 and 2,100.84

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Solution

The fourth proportional to 3,869.23, 5,339.41 and 2,100.84 is: 2,899.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.23 : 5,339.41 = 2,100.84 : x
  2. Step 2: Convert to fraction form
    3,869.23/5,339.41 = 2,100.84/x
  3. Step 3: Cross multiply
    3,869.23x = 5,339.41 × 2,100.84
  4. Step 4: Simplify right side
    3,869.23x = 11,217,246.10
  5. Step 5: Solve for x
    x = 11,217,246.10/3,869.23
  6. Step 6: Final answer
    x = 2,899.09

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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.