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Finding the Fourth Proportional to 3,020.45, 4,530.61 and 1,719.13

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Solution

The fourth proportional to 3,020.45, 4,530.61 and 1,719.13 is: 2,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.45 : 4,530.61 = 1,719.13 : x
  2. Step 2: Convert to fraction form
    3,020.45/4,530.61 = 1,719.13/x
  3. Step 3: Cross multiply
    3,020.45x = 4,530.61 × 1,719.13
  4. Step 4: Simplify right side
    3,020.45x = 7,788,680.62
  5. Step 5: Solve for x
    x = 7,788,680.62/3,020.45
  6. Step 6: Final answer
    x = 2,578.65

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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.