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Finding the Fourth Proportional to 5,813.45, 8,719.44 and 1,865.15

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Solution

The fourth proportional to 5,813.45, 8,719.44 and 1,865.15 is: 2,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.45 : 8,719.44 = 1,865.15 : x
  2. Step 2: Convert to fraction form
    5,813.45/8,719.44 = 1,865.15/x
  3. Step 3: Cross multiply
    5,813.45x = 8,719.44 × 1,865.15
  4. Step 4: Simplify right side
    5,813.45x = 16,263,063.52
  5. Step 5: Solve for x
    x = 16,263,063.52/5,813.45
  6. Step 6: Final answer
    x = 2,797.49

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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.