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Finding the Fourth Proportional to 2,616.47, 3,607.30 and 1,908.49

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Solution

The fourth proportional to 2,616.47, 3,607.30 and 1,908.49 is: 2,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.47 : 3,607.30 = 1,908.49 : x
  2. Step 2: Convert to fraction form
    2,616.47/3,607.30 = 1,908.49/x
  3. Step 3: Cross multiply
    2,616.47x = 3,607.30 × 1,908.49
  4. Step 4: Simplify right side
    2,616.47x = 6,884,495.98
  5. Step 5: Solve for x
    x = 6,884,495.98/2,616.47
  6. Step 6: Final answer
    x = 2,631.22

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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.