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Finding the Fourth Proportional to 1,812.69, 2,719.35 and 579.96

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Solution

The fourth proportional to 1,812.69, 2,719.35 and 579.96 is: 870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.69 : 2,719.35 = 579.96 : x
  2. Step 2: Convert to fraction form
    1,812.69/2,719.35 = 579.96/x
  3. Step 3: Cross multiply
    1,812.69x = 2,719.35 × 579.96
  4. Step 4: Simplify right side
    1,812.69x = 1,577,114.23
  5. Step 5: Solve for x
    x = 1,577,114.23/1,812.69
  6. Step 6: Final answer
    x = 870.04

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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.