Home / 3,107.50-4,287.30-2,111.04

Finding the Fourth Proportional to 3,107.50, 4,287.30 and 2,111.04

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Solution

The fourth proportional to 3,107.50, 4,287.30 and 2,111.04 is: 2,912.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.50 : 4,287.30 = 2,111.04 : x
  2. Step 2: Convert to fraction form
    3,107.50/4,287.30 = 2,111.04/x
  3. Step 3: Cross multiply
    3,107.50x = 4,287.30 × 2,111.04
  4. Step 4: Simplify right side
    3,107.50x = 9,050,653.88
  5. Step 5: Solve for x
    x = 9,050,653.88/3,107.50
  6. Step 6: Final answer
    x = 2,912.52

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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.