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Finding the Fourth Proportional to 1,946.19, 2,919.60 and 630.27

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Solution

The fourth proportional to 1,946.19, 2,919.60 and 630.27 is: 945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.19 : 2,919.60 = 630.27 : x
  2. Step 2: Convert to fraction form
    1,946.19/2,919.60 = 630.27/x
  3. Step 3: Cross multiply
    1,946.19x = 2,919.60 × 630.27
  4. Step 4: Simplify right side
    1,946.19x = 1,840,136.29
  5. Step 5: Solve for x
    x = 1,840,136.29/1,946.19
  6. Step 6: Final answer
    x = 945.51

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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.