Home / 2,136.96-2,949.36-1,205.76

Finding the Fourth Proportional to 2,136.96, 2,949.36 and 1,205.76

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Solution

The fourth proportional to 2,136.96, 2,949.36 and 1,205.76 is: 1,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.96 : 2,949.36 = 1,205.76 : x
  2. Step 2: Convert to fraction form
    2,136.96/2,949.36 = 1,205.76/x
  3. Step 3: Cross multiply
    2,136.96x = 2,949.36 × 1,205.76
  4. Step 4: Simplify right side
    2,136.96x = 3,556,220.31
  5. Step 5: Solve for x
    x = 3,556,220.31/2,136.96
  6. Step 6: Final answer
    x = 1,664.15

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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.