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Finding the Fourth Proportional to 3,614.70, 4,985.64 and 2,621.64

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Solution

The fourth proportional to 3,614.70, 4,985.64 and 2,621.64 is: 3,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,614.70 : 4,985.64 = 2,621.64 : x
  2. Step 2: Convert to fraction form
    3,614.70/4,985.64 = 2,621.64/x
  3. Step 3: Cross multiply
    3,614.70x = 4,985.64 × 2,621.64
  4. Step 4: Simplify right side
    3,614.70x = 13,070,553.25
  5. Step 5: Solve for x
    x = 13,070,553.25/3,614.70
  6. Step 6: Final answer
    x = 3,615.94

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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.