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Finding the Fourth Proportional to 3,012.77, 4,518.93 and 932.79

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Solution

The fourth proportional to 3,012.77, 4,518.93 and 932.79 is: 1,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.77 : 4,518.93 = 932.79 : x
  2. Step 2: Convert to fraction form
    3,012.77/4,518.93 = 932.79/x
  3. Step 3: Cross multiply
    3,012.77x = 4,518.93 × 932.79
  4. Step 4: Simplify right side
    3,012.77x = 4,215,230.54
  5. Step 5: Solve for x
    x = 4,215,230.54/3,012.77
  6. Step 6: Final answer
    x = 1,399.12

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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.