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Finding the Fourth Proportional to 6,404.40, 8,836.56 and 3,609.36

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Solution

The fourth proportional to 6,404.40, 8,836.56 and 3,609.36 is: 4,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,404.40 : 8,836.56 = 3,609.36 : x
  2. Step 2: Convert to fraction form
    6,404.40/8,836.56 = 3,609.36/x
  3. Step 3: Cross multiply
    6,404.40x = 8,836.56 × 3,609.36
  4. Step 4: Simplify right side
    6,404.40x = 31,894,326.20
  5. Step 5: Solve for x
    x = 31,894,326.20/6,404.40
  6. Step 6: Final answer
    x = 4,980.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.