Home / 2,621.92-3,616.32-2,289.64

Finding the Fourth Proportional to 2,621.92, 3,616.32 and 2,289.64

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Solution

The fourth proportional to 2,621.92, 3,616.32 and 2,289.64 is: 3,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.92 : 3,616.32 = 2,289.64 : x
  2. Step 2: Convert to fraction form
    2,621.92/3,616.32 = 2,289.64/x
  3. Step 3: Cross multiply
    2,621.92x = 3,616.32 × 2,289.64
  4. Step 4: Simplify right side
    2,621.92x = 8,280,070.92
  5. Step 5: Solve for x
    x = 8,280,070.92/2,621.92
  6. Step 6: Final answer
    x = 3,158.02

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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.