Home / 3,120.10-4,305.08-1,826.33

Finding the Fourth Proportional to 3,120.10, 4,305.08 and 1,826.33

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Solution

The fourth proportional to 3,120.10, 4,305.08 and 1,826.33 is: 2,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.10 : 4,305.08 = 1,826.33 : x
  2. Step 2: Convert to fraction form
    3,120.10/4,305.08 = 1,826.33/x
  3. Step 3: Cross multiply
    3,120.10x = 4,305.08 × 1,826.33
  4. Step 4: Simplify right side
    3,120.10x = 7,862,479.80
  5. Step 5: Solve for x
    x = 7,862,479.80/3,120.10
  6. Step 6: Final answer
    x = 2,519.95

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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.