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Finding the Fourth Proportional to 1,584.90, 2,187.27 and 886.14

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Solution

The fourth proportional to 1,584.90, 2,187.27 and 886.14 is: 1,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.90 : 2,187.27 = 886.14 : x
  2. Step 2: Convert to fraction form
    1,584.90/2,187.27 = 886.14/x
  3. Step 3: Cross multiply
    1,584.90x = 2,187.27 × 886.14
  4. Step 4: Simplify right side
    1,584.90x = 1,938,227.44
  5. Step 5: Solve for x
    x = 1,938,227.44/1,584.90
  6. Step 6: Final answer
    x = 1,222.93

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1.5x scale

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.