Home / 2,215.11-3,056.80-1,429.16

Finding the Fourth Proportional to 2,215.11, 3,056.80 and 1,429.16

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Solution

The fourth proportional to 2,215.11, 3,056.80 and 1,429.16 is: 1,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.11 : 3,056.80 = 1,429.16 : x
  2. Step 2: Convert to fraction form
    2,215.11/3,056.80 = 1,429.16/x
  3. Step 3: Cross multiply
    2,215.11x = 3,056.80 × 1,429.16
  4. Step 4: Simplify right side
    2,215.11x = 4,368,656.29
  5. Step 5: Solve for x
    x = 4,368,656.29/2,215.11
  6. Step 6: Final answer
    x = 1,972.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.