Home / 7,770.76-11,657.64-3,089.89

Finding the Fourth Proportional to 7,770.76, 11,657.64 and 3,089.89

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Solution

The fourth proportional to 7,770.76, 11,657.64 and 3,089.89 is: 4,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.76 : 11,657.64 = 3,089.89 : x
  2. Step 2: Convert to fraction form
    7,770.76/11,657.64 = 3,089.89/x
  3. Step 3: Cross multiply
    7,770.76x = 11,657.64 × 3,089.89
  4. Step 4: Simplify right side
    7,770.76x = 36,020,851.42
  5. Step 5: Solve for x
    x = 36,020,851.42/7,770.76
  6. Step 6: Final answer
    x = 4,635.44

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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.