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Finding the Fourth Proportional to 2,621.16, 3,616.02 and 2,221.11

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Solution

The fourth proportional to 2,621.16, 3,616.02 and 2,221.11 is: 3,064.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.16 : 3,616.02 = 2,221.11 : x
  2. Step 2: Convert to fraction form
    2,621.16/3,616.02 = 2,221.11/x
  3. Step 3: Cross multiply
    2,621.16x = 3,616.02 × 2,221.11
  4. Step 4: Simplify right side
    2,621.16x = 8,031,578.18
  5. Step 5: Solve for x
    x = 8,031,578.18/2,621.16
  6. Step 6: Final answer
    x = 3,064.13

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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.