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Finding the Fourth Proportional to 1,584.63, 2,186.81 and 886

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Solution

The fourth proportional to 1,584.63, 2,186.81 and 886 is: 1,222.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.63 : 2,186.81 = 886 : x
  2. Step 2: Convert to fraction form
    1,584.63/2,186.81 = 886/x
  3. Step 3: Cross multiply
    1,584.63x = 2,186.81 × 886
  4. Step 4: Simplify right side
    1,584.63x = 1,937,513.66
  5. Step 5: Solve for x
    x = 1,937,513.66/1,584.63
  6. Step 6: Final answer
    x = 1,222.69

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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.