Home / 3,789.59-5,685.08-1,290.99

Finding the Fourth Proportional to 3,789.59, 5,685.08 and 1,290.99

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Solution

The fourth proportional to 3,789.59, 5,685.08 and 1,290.99 is: 1,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.59 : 5,685.08 = 1,290.99 : x
  2. Step 2: Convert to fraction form
    3,789.59/5,685.08 = 1,290.99/x
  3. Step 3: Cross multiply
    3,789.59x = 5,685.08 × 1,290.99
  4. Step 4: Simplify right side
    3,789.59x = 7,339,381.43
  5. Step 5: Solve for x
    x = 7,339,381.43/3,789.59
  6. Step 6: Final answer
    x = 1,936.72

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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.