Home / 3,128.51-4,711.23-2,722.53

Finding the Fourth Proportional to 3,128.51, 4,711.23 and 2,722.53

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Solution

The fourth proportional to 3,128.51, 4,711.23 and 2,722.53 is: 4,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.51 : 4,711.23 = 2,722.53 : x
  2. Step 2: Convert to fraction form
    3,128.51/4,711.23 = 2,722.53/x
  3. Step 3: Cross multiply
    3,128.51x = 4,711.23 × 2,722.53
  4. Step 4: Simplify right side
    3,128.51x = 12,826,465.01
  5. Step 5: Solve for x
    x = 12,826,465.01/3,128.51
  6. Step 6: Final answer
    x = 4,099.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.