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Finding the Fourth Proportional to 6,386.96, 8,815.56 and 6,019.76

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Solution

The fourth proportional to 6,386.96, 8,815.56 and 6,019.76 is: 8,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.96 : 8,815.56 = 6,019.76 : x
  2. Step 2: Convert to fraction form
    6,386.96/8,815.56 = 6,019.76/x
  3. Step 3: Cross multiply
    6,386.96x = 8,815.56 × 6,019.76
  4. Step 4: Simplify right side
    6,386.96x = 53,067,555.47
  5. Step 5: Solve for x
    x = 53,067,555.47/6,386.96
  6. Step 6: Final answer
    x = 8,308.73

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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.