Home / 2,289.12-3,158.74-1,294.37

Finding the Fourth Proportional to 2,289.12, 3,158.74 and 1,294.37

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Solution

The fourth proportional to 2,289.12, 3,158.74 and 1,294.37 is: 1,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.12 : 3,158.74 = 1,294.37 : x
  2. Step 2: Convert to fraction form
    2,289.12/3,158.74 = 1,294.37/x
  3. Step 3: Cross multiply
    2,289.12x = 3,158.74 × 1,294.37
  4. Step 4: Simplify right side
    2,289.12x = 4,088,578.29
  5. Step 5: Solve for x
    x = 4,088,578.29/2,289.12
  6. Step 6: Final answer
    x = 1,786.09

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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.