Home / 9,780.78-14,672.04-3,207.60

Finding the Fourth Proportional to 9,780.78, 14,672.04 and 3,207.60

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Solution

The fourth proportional to 9,780.78, 14,672.04 and 3,207.60 is: 4,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.78 : 14,672.04 = 3,207.60 : x
  2. Step 2: Convert to fraction form
    9,780.78/14,672.04 = 3,207.60/x
  3. Step 3: Cross multiply
    9,780.78x = 14,672.04 × 3,207.60
  4. Step 4: Simplify right side
    9,780.78x = 47,062,035.50
  5. Step 5: Solve for x
    x = 47,062,035.50/9,780.78
  6. Step 6: Final answer
    x = 4,811.69

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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.