Home / 1,813.38-2,720.16-580.70

Finding the Fourth Proportional to 1,813.38, 2,720.16 and 580.70

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Solution

The fourth proportional to 1,813.38, 2,720.16 and 580.70 is: 871.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.38 : 2,720.16 = 580.70 : x
  2. Step 2: Convert to fraction form
    1,813.38/2,720.16 = 580.70/x
  3. Step 3: Cross multiply
    1,813.38x = 2,720.16 × 580.70
  4. Step 4: Simplify right side
    1,813.38x = 1,579,583.31
  5. Step 5: Solve for x
    x = 1,579,583.31/1,813.38
  6. Step 6: Final answer
    x = 871.07

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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.