Home / 2,215.32-3,319.53-828.28

Finding the Fourth Proportional to 2,215.32, 3,319.53 and 828.28

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Solution

The fourth proportional to 2,215.32, 3,319.53 and 828.28 is: 1,241.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.32 : 3,319.53 = 828.28 : x
  2. Step 2: Convert to fraction form
    2,215.32/3,319.53 = 828.28/x
  3. Step 3: Cross multiply
    2,215.32x = 3,319.53 × 828.28
  4. Step 4: Simplify right side
    2,215.32x = 2,749,500.31
  5. Step 5: Solve for x
    x = 2,749,500.31/2,215.32
  6. Step 6: Final answer
    x = 1,241.13

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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.