Home / 3,111.40-4,293.99-1,785.43

Finding the Fourth Proportional to 3,111.40, 4,293.99 and 1,785.43

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Solution

The fourth proportional to 3,111.40, 4,293.99 and 1,785.43 is: 2,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.40 : 4,293.99 = 1,785.43 : x
  2. Step 2: Convert to fraction form
    3,111.40/4,293.99 = 1,785.43/x
  3. Step 3: Cross multiply
    3,111.40x = 4,293.99 × 1,785.43
  4. Step 4: Simplify right side
    3,111.40x = 7,666,618.57
  5. Step 5: Solve for x
    x = 7,666,618.57/3,111.40
  6. Step 6: Final answer
    x = 2,464.04

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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.