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Finding the Fourth Proportional to 3,908.42, 5,890.08 and 3,518.86

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Solution

The fourth proportional to 3,908.42, 5,890.08 and 3,518.86 is: 5,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.42 : 5,890.08 = 3,518.86 : x
  2. Step 2: Convert to fraction form
    3,908.42/5,890.08 = 3,518.86/x
  3. Step 3: Cross multiply
    3,908.42x = 5,890.08 × 3,518.86
  4. Step 4: Simplify right side
    3,908.42x = 20,726,352.18
  5. Step 5: Solve for x
    x = 20,726,352.18/3,908.42
  6. Step 6: Final answer
    x = 5,303.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.