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Finding the Fourth Proportional to 3,616.12, 5,425.80 and 3,606.40

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Solution

The fourth proportional to 3,616.12, 5,425.80 and 3,606.40 is: 5,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.12 : 5,425.80 = 3,606.40 : x
  2. Step 2: Convert to fraction form
    3,616.12/5,425.80 = 3,606.40/x
  3. Step 3: Cross multiply
    3,616.12x = 5,425.80 × 3,606.40
  4. Step 4: Simplify right side
    3,616.12x = 19,567,605.12
  5. Step 5: Solve for x
    x = 19,567,605.12/3,616.12
  6. Step 6: Final answer
    x = 5,411.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.