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Finding the Fourth Proportional to 1,813.99, 2,721.22 and 580.99

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Solution

The fourth proportional to 1,813.99, 2,721.22 and 580.99 is: 871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.99 : 2,721.22 = 580.99 : x
  2. Step 2: Convert to fraction form
    1,813.99/2,721.22 = 580.99/x
  3. Step 3: Cross multiply
    1,813.99x = 2,721.22 × 580.99
  4. Step 4: Simplify right side
    1,813.99x = 1,580,995.53
  5. Step 5: Solve for x
    x = 1,580,995.53/1,813.99
  6. Step 6: Final answer
    x = 871.56

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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.