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Finding the Fourth Proportional to 5,812.76, 8,719.03 and 1,917.17

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Solution

The fourth proportional to 5,812.76, 8,719.03 and 1,917.17 is: 2,875.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.76 : 8,719.03 = 1,917.17 : x
  2. Step 2: Convert to fraction form
    5,812.76/8,719.03 = 1,917.17/x
  3. Step 3: Cross multiply
    5,812.76x = 8,719.03 × 1,917.17
  4. Step 4: Simplify right side
    5,812.76x = 16,715,850.65
  5. Step 5: Solve for x
    x = 16,715,850.65/5,812.76
  6. Step 6: Final answer
    x = 2,875.72

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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.