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Finding the Fourth Proportional to 8,617.58, 12,913.98 and 4,912.17

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Solution

The fourth proportional to 8,617.58, 12,913.98 and 4,912.17 is: 7,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.58 : 12,913.98 = 4,912.17 : x
  2. Step 2: Convert to fraction form
    8,617.58/12,913.98 = 4,912.17/x
  3. Step 3: Cross multiply
    8,617.58x = 12,913.98 × 4,912.17
  4. Step 4: Simplify right side
    8,617.58x = 63,435,665.14
  5. Step 5: Solve for x
    x = 63,435,665.14/8,617.58
  6. Step 6: Final answer
    x = 7,361.19

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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.