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Finding the Fourth Proportional to 3,605.40, 4,969.62 and 3,605.40

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Solution

The fourth proportional to 3,605.40, 4,969.62 and 3,605.40 is: 4,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.40 : 4,969.62 = 3,605.40 : x
  2. Step 2: Convert to fraction form
    3,605.40/4,969.62 = 3,605.40/x
  3. Step 3: Cross multiply
    3,605.40x = 4,969.62 × 3,605.40
  4. Step 4: Simplify right side
    3,605.40x = 17,917,467.95
  5. Step 5: Solve for x
    x = 17,917,467.95/3,605.40
  6. Step 6: Final answer
    x = 4,969.62

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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.