Home / 2,215.36-3,319.20-1,336.16

Finding the Fourth Proportional to 2,215.36, 3,319.20 and 1,336.16

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Solution

The fourth proportional to 2,215.36, 3,319.20 and 1,336.16 is: 2,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.36 : 3,319.20 = 1,336.16 : x
  2. Step 2: Convert to fraction form
    2,215.36/3,319.20 = 1,336.16/x
  3. Step 3: Cross multiply
    2,215.36x = 3,319.20 × 1,336.16
  4. Step 4: Simplify right side
    2,215.36x = 4,434,982.27
  5. Step 5: Solve for x
    x = 4,434,982.27/2,215.36
  6. Step 6: Final answer
    x = 2,001.92

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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.