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Finding the Fourth Proportional to 3,616.65, 4,989.53 and 2,867.60

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Solution

The fourth proportional to 3,616.65, 4,989.53 and 2,867.60 is: 3,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.65 : 4,989.53 = 2,867.60 : x
  2. Step 2: Convert to fraction form
    3,616.65/4,989.53 = 2,867.60/x
  3. Step 3: Cross multiply
    3,616.65x = 4,989.53 × 2,867.60
  4. Step 4: Simplify right side
    3,616.65x = 14,307,995.87
  5. Step 5: Solve for x
    x = 14,307,995.87/3,616.65
  6. Step 6: Final answer
    x = 3,956.15

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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.