Home / 3,138.23-4,707.36-946.95

Finding the Fourth Proportional to 3,138.23, 4,707.36 and 946.95

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Solution

The fourth proportional to 3,138.23, 4,707.36 and 946.95 is: 1,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.23 : 4,707.36 = 946.95 : x
  2. Step 2: Convert to fraction form
    3,138.23/4,707.36 = 946.95/x
  3. Step 3: Cross multiply
    3,138.23x = 4,707.36 × 946.95
  4. Step 4: Simplify right side
    3,138.23x = 4,457,634.55
  5. Step 5: Solve for x
    x = 4,457,634.55/3,138.23
  6. Step 6: Final answer
    x = 1,420.43

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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.