Home / 3,138.17-4,707.03-1,288.79

Finding the Fourth Proportional to 3,138.17, 4,707.03 and 1,288.79

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Solution

The fourth proportional to 3,138.17, 4,707.03 and 1,288.79 is: 1,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.17 : 4,707.03 = 1,288.79 : x
  2. Step 2: Convert to fraction form
    3,138.17/4,707.03 = 1,288.79/x
  3. Step 3: Cross multiply
    3,138.17x = 4,707.03 × 1,288.79
  4. Step 4: Simplify right side
    3,138.17x = 6,066,349.66
  5. Step 5: Solve for x
    x = 6,066,349.66/3,138.17
  6. Step 6: Final answer
    x = 1,933.08

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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.