Home / 9,788.78-14,684.40-3,215.66

Finding the Fourth Proportional to 9,788.78, 14,684.40 and 3,215.66

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Solution

The fourth proportional to 9,788.78, 14,684.40 and 3,215.66 is: 4,823.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,788.78 : 14,684.40 = 3,215.66 : x
  2. Step 2: Convert to fraction form
    9,788.78/14,684.40 = 3,215.66/x
  3. Step 3: Cross multiply
    9,788.78x = 14,684.40 × 3,215.66
  4. Step 4: Simplify right side
    9,788.78x = 47,220,037.70
  5. Step 5: Solve for x
    x = 47,220,037.70/9,788.78
  6. Step 6: Final answer
    x = 4,823.89

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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.