Home / 1,943.72-2,916.80-1,819.19

Finding the Fourth Proportional to 1,943.72, 2,916.80 and 1,819.19

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Solution

The fourth proportional to 1,943.72, 2,916.80 and 1,819.19 is: 2,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.72 : 2,916.80 = 1,819.19 : x
  2. Step 2: Convert to fraction form
    1,943.72/2,916.80 = 1,819.19/x
  3. Step 3: Cross multiply
    1,943.72x = 2,916.80 × 1,819.19
  4. Step 4: Simplify right side
    1,943.72x = 5,306,189.71
  5. Step 5: Solve for x
    x = 5,306,189.71/1,943.72
  6. Step 6: Final answer
    x = 2,729.92

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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.