Home / 3,869.45-5,339.40-2,168.02

Finding the Fourth Proportional to 3,869.45, 5,339.40 and 2,168.02

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Solution

The fourth proportional to 3,869.45, 5,339.40 and 2,168.02 is: 2,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.45 : 5,339.40 = 2,168.02 : x
  2. Step 2: Convert to fraction form
    3,869.45/5,339.40 = 2,168.02/x
  3. Step 3: Cross multiply
    3,869.45x = 5,339.40 × 2,168.02
  4. Step 4: Simplify right side
    3,869.45x = 11,575,925.99
  5. Step 5: Solve for x
    x = 11,575,925.99/3,869.45
  6. Step 6: Final answer
    x = 2,991.62

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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.