Home / 2,211.32-3,317.52-913.16

Finding the Fourth Proportional to 2,211.32, 3,317.52 and 913.16

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Solution

The fourth proportional to 2,211.32, 3,317.52 and 913.16 is: 1,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.32 : 3,317.52 = 913.16 : x
  2. Step 2: Convert to fraction form
    2,211.32/3,317.52 = 913.16/x
  3. Step 3: Cross multiply
    2,211.32x = 3,317.52 × 913.16
  4. Step 4: Simplify right side
    2,211.32x = 3,029,426.56
  5. Step 5: Solve for x
    x = 3,029,426.56/2,211.32
  6. Step 6: Final answer
    x = 1,369.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.