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Finding the Fourth Proportional to 4,720.36, 7,084.86 and 3,621.16

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Solution

The fourth proportional to 4,720.36, 7,084.86 and 3,621.16 is: 5,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.36 : 7,084.86 = 3,621.16 : x
  2. Step 2: Convert to fraction form
    4,720.36/7,084.86 = 3,621.16/x
  3. Step 3: Cross multiply
    4,720.36x = 7,084.86 × 3,621.16
  4. Step 4: Simplify right side
    4,720.36x = 25,655,411.64
  5. Step 5: Solve for x
    x = 25,655,411.64/4,720.36
  6. Step 6: Final answer
    x = 5,435.05

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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.