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Finding the Fourth Proportional to 5,490, 7,578.63 and 3,604.32

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Solution

The fourth proportional to 5,490, 7,578.63 and 3,604.32 is: 4,975.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490 : 7,578.63 = 3,604.32 : x
  2. Step 2: Convert to fraction form
    5,490/7,578.63 = 3,604.32/x
  3. Step 3: Cross multiply
    5,490x = 7,578.63 × 3,604.32
  4. Step 4: Simplify right side
    5,490x = 27,315,807.68
  5. Step 5: Solve for x
    x = 27,315,807.68/5,490
  6. Step 6: Final answer
    x = 4,975.56

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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.