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Finding the Fourth Proportional to 3,518.95, 5,278.42 and 1,516.82

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Solution

The fourth proportional to 3,518.95, 5,278.42 and 1,516.82 is: 2,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.95 : 5,278.42 = 1,516.82 : x
  2. Step 2: Convert to fraction form
    3,518.95/5,278.42 = 1,516.82/x
  3. Step 3: Cross multiply
    3,518.95x = 5,278.42 × 1,516.82
  4. Step 4: Simplify right side
    3,518.95x = 8,006,413.02
  5. Step 5: Solve for x
    x = 8,006,413.02/3,518.95
  6. Step 6: Final answer
    x = 2,275.23

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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.