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Finding the Fourth Proportional to 6,609.40, 9,900.30 and 3,102.40

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Solution

The fourth proportional to 6,609.40, 9,900.30 and 3,102.40 is: 4,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.40 : 9,900.30 = 3,102.40 : x
  2. Step 2: Convert to fraction form
    6,609.40/9,900.30 = 3,102.40/x
  3. Step 3: Cross multiply
    6,609.40x = 9,900.30 × 3,102.40
  4. Step 4: Simplify right side
    6,609.40x = 30,714,690.72
  5. Step 5: Solve for x
    x = 30,714,690.72/6,609.40
  6. Step 6: Final answer
    x = 4,647.12

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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.