Home / 7,990.08-11,989.95-3,310.20

Finding the Fourth Proportional to 7,990.08, 11,989.95 and 3,310.20

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Solution

The fourth proportional to 7,990.08, 11,989.95 and 3,310.20 is: 4,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.08 : 11,989.95 = 3,310.20 : x
  2. Step 2: Convert to fraction form
    7,990.08/11,989.95 = 3,310.20/x
  3. Step 3: Cross multiply
    7,990.08x = 11,989.95 × 3,310.20
  4. Step 4: Simplify right side
    7,990.08x = 39,689,132.49
  5. Step 5: Solve for x
    x = 39,689,132.49/7,990.08
  6. Step 6: Final answer
    x = 4,967.30

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1.5x scale

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.