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Finding the Fourth Proportional to 3,603.96, 4,976.64 and 2,816.64

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Solution

The fourth proportional to 3,603.96, 4,976.64 and 2,816.64 is: 3,889.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.96 : 4,976.64 = 2,816.64 : x
  2. Step 2: Convert to fraction form
    3,603.96/4,976.64 = 2,816.64/x
  3. Step 3: Cross multiply
    3,603.96x = 4,976.64 × 2,816.64
  4. Step 4: Simplify right side
    3,603.96x = 14,017,403.29
  5. Step 5: Solve for x
    x = 14,017,403.29/3,603.96
  6. Step 6: Final answer
    x = 3,889.44

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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.