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Finding the Fourth Proportional to 3,008.46, 4,512.12 and 817.38

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Solution

The fourth proportional to 3,008.46, 4,512.12 and 817.38 is: 1,225.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.46 : 4,512.12 = 817.38 : x
  2. Step 2: Convert to fraction form
    3,008.46/4,512.12 = 817.38/x
  3. Step 3: Cross multiply
    3,008.46x = 4,512.12 × 817.38
  4. Step 4: Simplify right side
    3,008.46x = 3,688,116.65
  5. Step 5: Solve for x
    x = 3,688,116.65/3,008.46
  6. Step 6: Final answer
    x = 1,225.92

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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.