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Finding the Fourth Proportional to 1,585.58, 2,188.04 and 886.95

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Solution

The fourth proportional to 1,585.58, 2,188.04 and 886.95 is: 1,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.58 : 2,188.04 = 886.95 : x
  2. Step 2: Convert to fraction form
    1,585.58/2,188.04 = 886.95/x
  3. Step 3: Cross multiply
    1,585.58x = 2,188.04 × 886.95
  4. Step 4: Simplify right side
    1,585.58x = 1,940,677.64
  5. Step 5: Solve for x
    x = 1,940,677.64/1,585.58
  6. Step 6: Final answer
    x = 1,223.96

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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.