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Finding the Fourth Proportional to 1,944.74, 2,917.12 and 712.24

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Solution

The fourth proportional to 1,944.74, 2,917.12 and 712.24 is: 1,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.74 : 2,917.12 = 712.24 : x
  2. Step 2: Convert to fraction form
    1,944.74/2,917.12 = 712.24/x
  3. Step 3: Cross multiply
    1,944.74x = 2,917.12 × 712.24
  4. Step 4: Simplify right side
    1,944.74x = 2,077,689.55
  5. Step 5: Solve for x
    x = 2,077,689.55/1,944.74
  6. Step 6: Final answer
    x = 1,068.36

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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.