Home / 6,612.20-9,918.30-3,325.80

Finding the Fourth Proportional to 6,612.20, 9,918.30 and 3,325.80

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Solution

The fourth proportional to 6,612.20, 9,918.30 and 3,325.80 is: 4,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.20 : 9,918.30 = 3,325.80 : x
  2. Step 2: Convert to fraction form
    6,612.20/9,918.30 = 3,325.80/x
  3. Step 3: Cross multiply
    6,612.20x = 9,918.30 × 3,325.80
  4. Step 4: Simplify right side
    6,612.20x = 32,986,282.14
  5. Step 5: Solve for x
    x = 32,986,282.14/6,612.20
  6. Step 6: Final answer
    x = 4,988.70

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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.