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Finding the Fourth Proportional to 2,965.14, 4,448.35 and 990.94

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Solution

The fourth proportional to 2,965.14, 4,448.35 and 990.94 is: 1,486.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.14 : 4,448.35 = 990.94 : x
  2. Step 2: Convert to fraction form
    2,965.14/4,448.35 = 990.94/x
  3. Step 3: Cross multiply
    2,965.14x = 4,448.35 × 990.94
  4. Step 4: Simplify right side
    2,965.14x = 4,408,048.55
  5. Step 5: Solve for x
    x = 4,408,048.55/2,965.14
  6. Step 6: Final answer
    x = 1,486.62

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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.