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Finding the Fourth Proportional to 1,813.59, 2,720.39 and 1,491.08

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Solution

The fourth proportional to 1,813.59, 2,720.39 and 1,491.08 is: 2,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.59 : 2,720.39 = 1,491.08 : x
  2. Step 2: Convert to fraction form
    1,813.59/2,720.39 = 1,491.08/x
  3. Step 3: Cross multiply
    1,813.59x = 2,720.39 × 1,491.08
  4. Step 4: Simplify right side
    1,813.59x = 4,056,298.06
  5. Step 5: Solve for x
    x = 4,056,298.06/1,813.59
  6. Step 6: Final answer
    x = 2,236.61

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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.