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Finding the Fourth Proportional to 3,653.04, 5,479.54 and 2,919.18

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Solution

The fourth proportional to 3,653.04, 5,479.54 and 2,919.18 is: 4,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.04 : 5,479.54 = 2,919.18 : x
  2. Step 2: Convert to fraction form
    3,653.04/5,479.54 = 2,919.18/x
  3. Step 3: Cross multiply
    3,653.04x = 5,479.54 × 2,919.18
  4. Step 4: Simplify right side
    3,653.04x = 15,995,763.58
  5. Step 5: Solve for x
    x = 15,995,763.58/3,653.04
  6. Step 6: Final answer
    x = 4,378.75

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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.