Home / 2,287.70-3,431.55-1,133.30

Finding the Fourth Proportional to 2,287.70, 3,431.55 and 1,133.30

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Solution

The fourth proportional to 2,287.70, 3,431.55 and 1,133.30 is: 1,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.70 : 3,431.55 = 1,133.30 : x
  2. Step 2: Convert to fraction form
    2,287.70/3,431.55 = 1,133.30/x
  3. Step 3: Cross multiply
    2,287.70x = 3,431.55 × 1,133.30
  4. Step 4: Simplify right side
    2,287.70x = 3,888,975.62
  5. Step 5: Solve for x
    x = 3,888,975.62/2,287.70
  6. Step 6: Final answer
    x = 1,699.95

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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.