Home / 2,630.50-3,629.27-2,136.40

Finding the Fourth Proportional to 2,630.50, 3,629.27 and 2,136.40

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Solution

The fourth proportional to 2,630.50, 3,629.27 and 2,136.40 is: 2,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.50 : 3,629.27 = 2,136.40 : x
  2. Step 2: Convert to fraction form
    2,630.50/3,629.27 = 2,136.40/x
  3. Step 3: Cross multiply
    2,630.50x = 3,629.27 × 2,136.40
  4. Step 4: Simplify right side
    2,630.50x = 7,753,568.70
  5. Step 5: Solve for x
    x = 7,753,568.70/2,630.50
  6. Step 6: Final answer
    x = 2,947.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.