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Finding the Fourth Proportional to 1,944.42, 2,916.36 and 628.31

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Solution

The fourth proportional to 1,944.42, 2,916.36 and 628.31 is: 942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.42 : 2,916.36 = 628.31 : x
  2. Step 2: Convert to fraction form
    1,944.42/2,916.36 = 628.31/x
  3. Step 3: Cross multiply
    1,944.42x = 2,916.36 × 628.31
  4. Step 4: Simplify right side
    1,944.42x = 1,832,363.57
  5. Step 5: Solve for x
    x = 1,832,363.57/1,944.42
  6. Step 6: Final answer
    x = 942.37

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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.