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Finding the Fourth Proportional to 1,686.86, 2,527.86 and 1,068.86

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Solution

The fourth proportional to 1,686.86, 2,527.86 and 1,068.86 is: 1,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.86 : 2,527.86 = 1,068.86 : x
  2. Step 2: Convert to fraction form
    1,686.86/2,527.86 = 1,068.86/x
  3. Step 3: Cross multiply
    1,686.86x = 2,527.86 × 1,068.86
  4. Step 4: Simplify right side
    1,686.86x = 2,701,928.44
  5. Step 5: Solve for x
    x = 2,701,928.44/1,686.86
  6. Step 6: Final answer
    x = 1,601.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.