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Finding the Fourth Proportional to 1,813.66, 2,503.11 and 1,372.06

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Solution

The fourth proportional to 1,813.66, 2,503.11 and 1,372.06 is: 1,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.66 : 2,503.11 = 1,372.06 : x
  2. Step 2: Convert to fraction form
    1,813.66/2,503.11 = 1,372.06/x
  3. Step 3: Cross multiply
    1,813.66x = 2,503.11 × 1,372.06
  4. Step 4: Simplify right side
    1,813.66x = 3,434,417.11
  5. Step 5: Solve for x
    x = 3,434,417.11/1,813.66
  6. Step 6: Final answer
    x = 1,893.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.