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Finding the Fourth Proportional to 2,187.66, 3,019.55 and 1,244.00

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Solution

The fourth proportional to 2,187.66, 3,019.55 and 1,244.00 is: 1,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.66 : 3,019.55 = 1,244.00 : x
  2. Step 2: Convert to fraction form
    2,187.66/3,019.55 = 1,244.00/x
  3. Step 3: Cross multiply
    2,187.66x = 3,019.55 × 1,244.00
  4. Step 4: Simplify right side
    2,187.66x = 3,756,321.53
  5. Step 5: Solve for x
    x = 3,756,321.53/2,187.66
  6. Step 6: Final answer
    x = 1,717.05

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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.