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Finding the Fourth Proportional to 3,616.56, 4,990.16 and 2,290.70

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Solution

The fourth proportional to 3,616.56, 4,990.16 and 2,290.70 is: 3,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.56 : 4,990.16 = 2,290.70 : x
  2. Step 2: Convert to fraction form
    3,616.56/4,990.16 = 2,290.70/x
  3. Step 3: Cross multiply
    3,616.56x = 4,990.16 × 2,290.70
  4. Step 4: Simplify right side
    3,616.56x = 11,430,923.11
  5. Step 5: Solve for x
    x = 11,430,923.11/3,616.56
  6. Step 6: Final answer
    x = 3,160.72

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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.