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Finding the Fourth Proportional to 3,012.68, 4,518.84 and 960.68

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Solution

The fourth proportional to 3,012.68, 4,518.84 and 960.68 is: 1,440.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.68 : 4,518.84 = 960.68 : x
  2. Step 2: Convert to fraction form
    3,012.68/4,518.84 = 960.68/x
  3. Step 3: Cross multiply
    3,012.68x = 4,518.84 × 960.68
  4. Step 4: Simplify right side
    3,012.68x = 4,341,159.21
  5. Step 5: Solve for x
    x = 4,341,159.21/3,012.68
  6. Step 6: Final answer
    x = 1,440.96

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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.