Home / 7,931.98-11,889.41-3,485.69

Finding the Fourth Proportional to 7,931.98, 11,889.41 and 3,485.69

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Solution

The fourth proportional to 7,931.98, 11,889.41 and 3,485.69 is: 5,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.98 : 11,889.41 = 3,485.69 : x
  2. Step 2: Convert to fraction form
    7,931.98/11,889.41 = 3,485.69/x
  3. Step 3: Cross multiply
    7,931.98x = 11,889.41 × 3,485.69
  4. Step 4: Simplify right side
    7,931.98x = 41,442,720.67
  5. Step 5: Solve for x
    x = 41,442,720.67/7,931.98
  6. Step 6: Final answer
    x = 5,224.77

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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.