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Finding the Fourth Proportional to 1,586.58, 2,189.41 and 887.95

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Solution

The fourth proportional to 1,586.58, 2,189.41 and 887.95 is: 1,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.58 : 2,189.41 = 887.95 : x
  2. Step 2: Convert to fraction form
    1,586.58/2,189.41 = 887.95/x
  3. Step 3: Cross multiply
    1,586.58x = 2,189.41 × 887.95
  4. Step 4: Simplify right side
    1,586.58x = 1,944,086.61
  5. Step 5: Solve for x
    x = 1,944,086.61/1,586.58
  6. Step 6: Final answer
    x = 1,225.33

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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.