Home / 2,629.68-3,945.84-1,591.80

Finding the Fourth Proportional to 2,629.68, 3,945.84 and 1,591.80

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Solution

The fourth proportional to 2,629.68, 3,945.84 and 1,591.80 is: 2,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.68 : 3,945.84 = 1,591.80 : x
  2. Step 2: Convert to fraction form
    2,629.68/3,945.84 = 1,591.80/x
  3. Step 3: Cross multiply
    2,629.68x = 3,945.84 × 1,591.80
  4. Step 4: Simplify right side
    2,629.68x = 6,280,988.11
  5. Step 5: Solve for x
    x = 6,280,988.11/2,629.68
  6. Step 6: Final answer
    x = 2,388.50

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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.