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Finding the Fourth Proportional to 3,215.08, 4,820.55 and 993.16

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Solution

The fourth proportional to 3,215.08, 4,820.55 and 993.16 is: 1,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.08 : 4,820.55 = 993.16 : x
  2. Step 2: Convert to fraction form
    3,215.08/4,820.55 = 993.16/x
  3. Step 3: Cross multiply
    3,215.08x = 4,820.55 × 993.16
  4. Step 4: Simplify right side
    3,215.08x = 4,787,577.44
  5. Step 5: Solve for x
    x = 4,787,577.44/3,215.08
  6. Step 6: Final answer
    x = 1,489.10

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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.