Home / 2,809.09-3,874.35-1,814.61

Finding the Fourth Proportional to 2,809.09, 3,874.35 and 1,814.61

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Solution

The fourth proportional to 2,809.09, 3,874.35 and 1,814.61 is: 2,502.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.09 : 3,874.35 = 1,814.61 : x
  2. Step 2: Convert to fraction form
    2,809.09/3,874.35 = 1,814.61/x
  3. Step 3: Cross multiply
    2,809.09x = 3,874.35 × 1,814.61
  4. Step 4: Simplify right side
    2,809.09x = 7,030,434.25
  5. Step 5: Solve for x
    x = 7,030,434.25/2,809.09
  6. Step 6: Final answer
    x = 2,502.75

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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.