Home / 9,720.90-14,583.68-3,147.09

Finding the Fourth Proportional to 9,720.90, 14,583.68 and 3,147.09

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Solution

The fourth proportional to 9,720.90, 14,583.68 and 3,147.09 is: 4,721.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.90 : 14,583.68 = 3,147.09 : x
  2. Step 2: Convert to fraction form
    9,720.90/14,583.68 = 3,147.09/x
  3. Step 3: Cross multiply
    9,720.90x = 14,583.68 × 3,147.09
  4. Step 4: Simplify right side
    9,720.90x = 45,896,137.76
  5. Step 5: Solve for x
    x = 45,896,137.76/9,720.90
  6. Step 6: Final answer
    x = 4,721.39

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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.