Home / 2,311.13-3,188.57-1,563.91

Finding the Fourth Proportional to 2,311.13, 3,188.57 and 1,563.91

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Solution

The fourth proportional to 2,311.13, 3,188.57 and 1,563.91 is: 2,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.13 : 3,188.57 = 1,563.91 : x
  2. Step 2: Convert to fraction form
    2,311.13/3,188.57 = 1,563.91/x
  3. Step 3: Cross multiply
    2,311.13x = 3,188.57 × 1,563.91
  4. Step 4: Simplify right side
    2,311.13x = 4,986,620.72
  5. Step 5: Solve for x
    x = 4,986,620.72/2,311.13
  6. Step 6: Final answer
    x = 2,157.65

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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.