Home / 7,690.06-11,535.41-3,989.91

Finding the Fourth Proportional to 7,690.06, 11,535.41 and 3,989.91

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Solution

The fourth proportional to 7,690.06, 11,535.41 and 3,989.91 is: 5,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.06 : 11,535.41 = 3,989.91 : x
  2. Step 2: Convert to fraction form
    7,690.06/11,535.41 = 3,989.91/x
  3. Step 3: Cross multiply
    7,690.06x = 11,535.41 × 3,989.91
  4. Step 4: Simplify right side
    7,690.06x = 46,025,300.95
  5. Step 5: Solve for x
    x = 46,025,300.95/7,690.06
  6. Step 6: Final answer
    x = 5,985.04

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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.