Home / 1,813.74-2,502.45-1,105.61

Finding the Fourth Proportional to 1,813.74, 2,502.45 and 1,105.61

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Solution

The fourth proportional to 1,813.74, 2,502.45 and 1,105.61 is: 1,525.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.74 : 2,502.45 = 1,105.61 : x
  2. Step 2: Convert to fraction form
    1,813.74/2,502.45 = 1,105.61/x
  3. Step 3: Cross multiply
    1,813.74x = 2,502.45 × 1,105.61
  4. Step 4: Simplify right side
    1,813.74x = 2,766,721.23
  5. Step 5: Solve for x
    x = 2,766,721.23/1,813.74
  6. Step 6: Final answer
    x = 1,525.42

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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.