Home / 3,711.16-5,121.64-2,139.35

Finding the Fourth Proportional to 3,711.16, 5,121.64 and 2,139.35

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Solution

The fourth proportional to 3,711.16, 5,121.64 and 2,139.35 is: 2,952.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.16 : 5,121.64 = 2,139.35 : x
  2. Step 2: Convert to fraction form
    3,711.16/5,121.64 = 2,139.35/x
  3. Step 3: Cross multiply
    3,711.16x = 5,121.64 × 2,139.35
  4. Step 4: Simplify right side
    3,711.16x = 10,956,980.53
  5. Step 5: Solve for x
    x = 10,956,980.53/3,711.16
  6. Step 6: Final answer
    x = 2,952.44

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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.