Home / 8,815.42-12,149.67-6,949.18

Finding the Fourth Proportional to 8,815.42, 12,149.67 and 6,949.18

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Solution

The fourth proportional to 8,815.42, 12,149.67 and 6,949.18 is: 9,577.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.42 : 12,149.67 = 6,949.18 : x
  2. Step 2: Convert to fraction form
    8,815.42/12,149.67 = 6,949.18/x
  3. Step 3: Cross multiply
    8,815.42x = 12,149.67 × 6,949.18
  4. Step 4: Simplify right side
    8,815.42x = 84,430,243.77
  5. Step 5: Solve for x
    x = 84,430,243.77/8,815.42
  6. Step 6: Final answer
    x = 9,577.56

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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.