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Finding the Fourth Proportional to 3,620.25, 4,995.95 and 1,964.25

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Solution

The fourth proportional to 3,620.25, 4,995.95 and 1,964.25 is: 2,710.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.25 : 4,995.95 = 1,964.25 : x
  2. Step 2: Convert to fraction form
    3,620.25/4,995.95 = 1,964.25/x
  3. Step 3: Cross multiply
    3,620.25x = 4,995.95 × 1,964.25
  4. Step 4: Simplify right side
    3,620.25x = 9,813,284.97
  5. Step 5: Solve for x
    x = 9,813,284.97/3,620.25
  6. Step 6: Final answer
    x = 2,710.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.