Home / 3,138.33-4,707.53-1,289.64

Finding the Fourth Proportional to 3,138.33, 4,707.53 and 1,289.64

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Solution

The fourth proportional to 3,138.33, 4,707.53 and 1,289.64 is: 1,934.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.33 : 4,707.53 = 1,289.64 : x
  2. Step 2: Convert to fraction form
    3,138.33/4,707.53 = 1,289.64/x
  3. Step 3: Cross multiply
    3,138.33x = 4,707.53 × 1,289.64
  4. Step 4: Simplify right side
    3,138.33x = 6,071,018.99
  5. Step 5: Solve for x
    x = 6,071,018.99/3,138.33
  6. Step 6: Final answer
    x = 1,934.47

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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.