Home / 9,989.18-14,979.87-3,745.79

Finding the Fourth Proportional to 9,989.18, 14,979.87 and 3,745.79

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Solution

The fourth proportional to 9,989.18, 14,979.87 and 3,745.79 is: 5,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.18 : 14,979.87 = 3,745.79 : x
  2. Step 2: Convert to fraction form
    9,989.18/14,979.87 = 3,745.79/x
  3. Step 3: Cross multiply
    9,989.18x = 14,979.87 × 3,745.79
  4. Step 4: Simplify right side
    9,989.18x = 56,111,372.35
  5. Step 5: Solve for x
    x = 56,111,372.35/9,989.18
  6. Step 6: Final answer
    x = 5,617.22

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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.