Home / 2,629.45-3,946.80-1,889.92

Finding the Fourth Proportional to 2,629.45, 3,946.80 and 1,889.92

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Solution

The fourth proportional to 2,629.45, 3,946.80 and 1,889.92 is: 2,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.45 : 3,946.80 = 1,889.92 : x
  2. Step 2: Convert to fraction form
    2,629.45/3,946.80 = 1,889.92/x
  3. Step 3: Cross multiply
    2,629.45x = 3,946.80 × 1,889.92
  4. Step 4: Simplify right side
    2,629.45x = 7,459,136.26
  5. Step 5: Solve for x
    x = 7,459,136.26/2,629.45
  6. Step 6: Final answer
    x = 2,836.77

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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.