Home / 2,213.64-3,319.18-913.64

Finding the Fourth Proportional to 2,213.64, 3,319.18 and 913.64

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Solution

The fourth proportional to 2,213.64, 3,319.18 and 913.64 is: 1,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.64 : 3,319.18 = 913.64 : x
  2. Step 2: Convert to fraction form
    2,213.64/3,319.18 = 913.64/x
  3. Step 3: Cross multiply
    2,213.64x = 3,319.18 × 913.64
  4. Step 4: Simplify right side
    2,213.64x = 3,032,535.62
  5. Step 5: Solve for x
    x = 3,032,535.62/2,213.64
  6. Step 6: Final answer
    x = 1,369.93

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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.