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Finding the Fourth Proportional to 6,615.08, 9,920.05 and 3,325.87

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Solution

The fourth proportional to 6,615.08, 9,920.05 and 3,325.87 is: 4,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.08 : 9,920.05 = 3,325.87 : x
  2. Step 2: Convert to fraction form
    6,615.08/9,920.05 = 3,325.87/x
  3. Step 3: Cross multiply
    6,615.08x = 9,920.05 × 3,325.87
  4. Step 4: Simplify right side
    6,615.08x = 32,992,763.58
  5. Step 5: Solve for x
    x = 32,992,763.58/6,615.08
  6. Step 6: Final answer
    x = 4,987.51

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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.