Home / 2,184.96-3,276.16-815.36

Finding the Fourth Proportional to 2,184.96, 3,276.16 and 815.36

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Solution

The fourth proportional to 2,184.96, 3,276.16 and 815.36 is: 1,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,184.96 : 3,276.16 = 815.36 : x
  2. Step 2: Convert to fraction form
    2,184.96/3,276.16 = 815.36/x
  3. Step 3: Cross multiply
    2,184.96x = 3,276.16 × 815.36
  4. Step 4: Simplify right side
    2,184.96x = 2,671,249.82
  5. Step 5: Solve for x
    x = 2,671,249.82/2,184.96
  6. Step 6: Final answer
    x = 1,222.56

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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.