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Finding the Fourth Proportional to 1,815.15, 2,722.13 and 582.26

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Solution

The fourth proportional to 1,815.15, 2,722.13 and 582.26 is: 873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.15 : 2,722.13 = 582.26 : x
  2. Step 2: Convert to fraction form
    1,815.15/2,722.13 = 582.26/x
  3. Step 3: Cross multiply
    1,815.15x = 2,722.13 × 582.26
  4. Step 4: Simplify right side
    1,815.15x = 1,584,991.31
  5. Step 5: Solve for x
    x = 1,584,991.31/1,815.15
  6. Step 6: Final answer
    x = 873.20

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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.