Home / 4,989.50-7,479.72-3,135

Finding the Fourth Proportional to 4,989.50, 7,479.72 and 3,135

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Solution

The fourth proportional to 4,989.50, 7,479.72 and 3,135 is: 4,699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.50 : 7,479.72 = 3,135 : x
  2. Step 2: Convert to fraction form
    4,989.50/7,479.72 = 3,135/x
  3. Step 3: Cross multiply
    4,989.50x = 7,479.72 × 3,135
  4. Step 4: Simplify right side
    4,989.50x = 23,448,922.20
  5. Step 5: Solve for x
    x = 23,448,922.20/4,989.50
  6. Step 6: Final answer
    x = 4,699.65

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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.