Home / 7,681.78-11,524.50-2,487.66

Finding the Fourth Proportional to 7,681.78, 11,524.50 and 2,487.66

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Solution

The fourth proportional to 7,681.78, 11,524.50 and 2,487.66 is: 3,732.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.78 : 11,524.50 = 2,487.66 : x
  2. Step 2: Convert to fraction form
    7,681.78/11,524.50 = 2,487.66/x
  3. Step 3: Cross multiply
    7,681.78x = 11,524.50 × 2,487.66
  4. Step 4: Simplify right side
    7,681.78x = 28,668,994.45
  5. Step 5: Solve for x
    x = 28,668,994.45/7,681.78
  6. Step 6: Final answer
    x = 3,732.08

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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.