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Finding the Fourth Proportional to 3,618.32, 4,993.20 and 1,962.32

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Solution

The fourth proportional to 3,618.32, 4,993.20 and 1,962.32 is: 2,707.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.32 : 4,993.20 = 1,962.32 : x
  2. Step 2: Convert to fraction form
    3,618.32/4,993.20 = 1,962.32/x
  3. Step 3: Cross multiply
    3,618.32x = 4,993.20 × 1,962.32
  4. Step 4: Simplify right side
    3,618.32x = 9,798,231.26
  5. Step 5: Solve for x
    x = 9,798,231.26/3,618.32
  6. Step 6: Final answer
    x = 2,707.95

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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.