Home / 2,215.16-3,322.47-1,177.28

Finding the Fourth Proportional to 2,215.16, 3,322.47 and 1,177.28

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Solution

The fourth proportional to 2,215.16, 3,322.47 and 1,177.28 is: 1,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.16 : 3,322.47 = 1,177.28 : x
  2. Step 2: Convert to fraction form
    2,215.16/3,322.47 = 1,177.28/x
  3. Step 3: Cross multiply
    2,215.16x = 3,322.47 × 1,177.28
  4. Step 4: Simplify right side
    2,215.16x = 3,911,477.48
  5. Step 5: Solve for x
    x = 3,911,477.48/2,215.16
  6. Step 6: Final answer
    x = 1,765.78

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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.