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Finding the Fourth Proportional to 4,789, 7,186.76 and 1,711

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Solution

The fourth proportional to 4,789, 7,186.76 and 1,711 is: 2,567.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789 : 7,186.76 = 1,711 : x
  2. Step 2: Convert to fraction form
    4,789/7,186.76 = 1,711/x
  3. Step 3: Cross multiply
    4,789x = 7,186.76 × 1,711
  4. Step 4: Simplify right side
    4,789x = 12,296,546.36
  5. Step 5: Solve for x
    x = 12,296,546.36/4,789
  6. Step 6: Final answer
    x = 2,567.66

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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.