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Finding the Fourth Proportional to 2,631.23, 3,946.85 and 683.44

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Solution

The fourth proportional to 2,631.23, 3,946.85 and 683.44 is: 1,025.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.23 : 3,946.85 = 683.44 : x
  2. Step 2: Convert to fraction form
    2,631.23/3,946.85 = 683.44/x
  3. Step 3: Cross multiply
    2,631.23x = 3,946.85 × 683.44
  4. Step 4: Simplify right side
    2,631.23x = 2,697,426.36
  5. Step 5: Solve for x
    x = 2,697,426.36/2,631.23
  6. Step 6: Final answer
    x = 1,025.16

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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.