Home / 2,311.22-3,188.12-1,426.70

Finding the Fourth Proportional to 2,311.22, 3,188.12 and 1,426.70

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Solution

The fourth proportional to 2,311.22, 3,188.12 and 1,426.70 is: 1,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.22 : 3,188.12 = 1,426.70 : x
  2. Step 2: Convert to fraction form
    2,311.22/3,188.12 = 1,426.70/x
  3. Step 3: Cross multiply
    2,311.22x = 3,188.12 × 1,426.70
  4. Step 4: Simplify right side
    2,311.22x = 4,548,490.80
  5. Step 5: Solve for x
    x = 4,548,490.80/2,311.22
  6. Step 6: Final answer
    x = 1,968.00

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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.