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Finding the Fourth Proportional to 6,998.78, 10,498.38 and 2,615.42

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Solution

The fourth proportional to 6,998.78, 10,498.38 and 2,615.42 is: 3,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,998.78 : 10,498.38 = 2,615.42 : x
  2. Step 2: Convert to fraction form
    6,998.78/10,498.38 = 2,615.42/x
  3. Step 3: Cross multiply
    6,998.78x = 10,498.38 × 2,615.42
  4. Step 4: Simplify right side
    6,998.78x = 27,457,673.02
  5. Step 5: Solve for x
    x = 27,457,673.02/6,998.78
  6. Step 6: Final answer
    x = 3,923.21

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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.