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Finding the Fourth Proportional to 7,280.04, 10,919.61 and 3,578.54

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Solution

The fourth proportional to 7,280.04, 10,919.61 and 3,578.54 is: 5,367.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.04 : 10,919.61 = 3,578.54 : x
  2. Step 2: Convert to fraction form
    7,280.04/10,919.61 = 3,578.54/x
  3. Step 3: Cross multiply
    7,280.04x = 10,919.61 × 3,578.54
  4. Step 4: Simplify right side
    7,280.04x = 39,076,261.17
  5. Step 5: Solve for x
    x = 39,076,261.17/7,280.04
  6. Step 6: Final answer
    x = 5,367.59

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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.