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Finding the Fourth Proportional to 2,965.01, 4,448.28 and 990.95

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Solution

The fourth proportional to 2,965.01, 4,448.28 and 990.95 is: 1,486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.01 : 4,448.28 = 990.95 : x
  2. Step 2: Convert to fraction form
    2,965.01/4,448.28 = 990.95/x
  3. Step 3: Cross multiply
    2,965.01x = 4,448.28 × 990.95
  4. Step 4: Simplify right side
    2,965.01x = 4,408,023.07
  5. Step 5: Solve for x
    x = 4,408,023.07/2,965.01
  6. Step 6: Final answer
    x = 1,486.68

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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.