Home / 3,109.18-4,660.48-1,028.65

Finding the Fourth Proportional to 3,109.18, 4,660.48 and 1,028.65

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Solution

The fourth proportional to 3,109.18, 4,660.48 and 1,028.65 is: 1,541.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.18 : 4,660.48 = 1,028.65 : x
  2. Step 2: Convert to fraction form
    3,109.18/4,660.48 = 1,028.65/x
  3. Step 3: Cross multiply
    3,109.18x = 4,660.48 × 1,028.65
  4. Step 4: Simplify right side
    3,109.18x = 4,794,002.75
  5. Step 5: Solve for x
    x = 4,794,002.75/3,109.18
  6. Step 6: Final answer
    x = 1,541.89

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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.