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Finding the Fourth Proportional to 3,369.81, 5,054.85 and 904.86

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Solution

The fourth proportional to 3,369.81, 5,054.85 and 904.86 is: 1,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,369.81 : 5,054.85 = 904.86 : x
  2. Step 2: Convert to fraction form
    3,369.81/5,054.85 = 904.86/x
  3. Step 3: Cross multiply
    3,369.81x = 5,054.85 × 904.86
  4. Step 4: Simplify right side
    3,369.81x = 4,573,931.57
  5. Step 5: Solve for x
    x = 4,573,931.57/3,369.81
  6. Step 6: Final answer
    x = 1,357.33

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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.