Home / 9,991.35-14,989.05-3,417.80

Finding the Fourth Proportional to 9,991.35, 14,989.05 and 3,417.80

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Solution

The fourth proportional to 9,991.35, 14,989.05 and 3,417.80 is: 5,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.35 : 14,989.05 = 3,417.80 : x
  2. Step 2: Convert to fraction form
    9,991.35/14,989.05 = 3,417.80/x
  3. Step 3: Cross multiply
    9,991.35x = 14,989.05 × 3,417.80
  4. Step 4: Simplify right side
    9,991.35x = 51,229,500.14
  5. Step 5: Solve for x
    x = 51,229,500.14/9,991.35
  6. Step 6: Final answer
    x = 5,127.39

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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.