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Finding the Fourth Proportional to 1,296.53, 1,943.05 and 1,213.49

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Solution

The fourth proportional to 1,296.53, 1,943.05 and 1,213.49 is: 1,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.53 : 1,943.05 = 1,213.49 : x
  2. Step 2: Convert to fraction form
    1,296.53/1,943.05 = 1,213.49/x
  3. Step 3: Cross multiply
    1,296.53x = 1,943.05 × 1,213.49
  4. Step 4: Simplify right side
    1,296.53x = 2,357,866.28
  5. Step 5: Solve for x
    x = 2,357,866.28/1,296.53
  6. Step 6: Final answer
    x = 1,818.60

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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.