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Finding the Fourth Proportional to 2,630.99, 3,946.51 and 683.19

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Solution

The fourth proportional to 2,630.99, 3,946.51 and 683.19 is: 1,024.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.99 : 3,946.51 = 683.19 : x
  2. Step 2: Convert to fraction form
    2,630.99/3,946.51 = 683.19/x
  3. Step 3: Cross multiply
    2,630.99x = 3,946.51 × 683.19
  4. Step 4: Simplify right side
    2,630.99x = 2,696,212.75
  5. Step 5: Solve for x
    x = 2,696,212.75/2,630.99
  6. Step 6: Final answer
    x = 1,024.79

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Double scale
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Similar ratio
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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.