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Finding the Fourth Proportional to 6,447.40, 9,673.80 and 4,818.09

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Solution

The fourth proportional to 6,447.40, 9,673.80 and 4,818.09 is: 7,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.40 : 9,673.80 = 4,818.09 : x
  2. Step 2: Convert to fraction form
    6,447.40/9,673.80 = 4,818.09/x
  3. Step 3: Cross multiply
    6,447.40x = 9,673.80 × 4,818.09
  4. Step 4: Simplify right side
    6,447.40x = 46,609,239.04
  5. Step 5: Solve for x
    x = 46,609,239.04/6,447.40
  6. Step 6: Final answer
    x = 7,229.15

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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.