Home / 2,187.10-3,012.90-1,626.61

Finding the Fourth Proportional to 2,187.10, 3,012.90 and 1,626.61

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Solution

The fourth proportional to 2,187.10, 3,012.90 and 1,626.61 is: 2,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.10 : 3,012.90 = 1,626.61 : x
  2. Step 2: Convert to fraction form
    2,187.10/3,012.90 = 1,626.61/x
  3. Step 3: Cross multiply
    2,187.10x = 3,012.90 × 1,626.61
  4. Step 4: Simplify right side
    2,187.10x = 4,900,813.27
  5. Step 5: Solve for x
    x = 4,900,813.27/2,187.10
  6. Step 6: Final answer
    x = 2,240.78

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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.