Home / 3,124.11-4,311.80-1,865.22

Finding the Fourth Proportional to 3,124.11, 4,311.80 and 1,865.22

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Solution

The fourth proportional to 3,124.11, 4,311.80 and 1,865.22 is: 2,574.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.11 : 4,311.80 = 1,865.22 : x
  2. Step 2: Convert to fraction form
    3,124.11/4,311.80 = 1,865.22/x
  3. Step 3: Cross multiply
    3,124.11x = 4,311.80 × 1,865.22
  4. Step 4: Simplify right side
    3,124.11x = 8,042,446.27
  5. Step 5: Solve for x
    x = 8,042,446.27/3,124.11
  6. Step 6: Final answer
    x = 2,574.32

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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.