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Finding the Fourth Proportional to 3,368.05, 5,050.05 and 1,288.21

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Solution

The fourth proportional to 3,368.05, 5,050.05 and 1,288.21 is: 1,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.05 : 5,050.05 = 1,288.21 : x
  2. Step 2: Convert to fraction form
    3,368.05/5,050.05 = 1,288.21/x
  3. Step 3: Cross multiply
    3,368.05x = 5,050.05 × 1,288.21
  4. Step 4: Simplify right side
    3,368.05x = 6,505,524.91
  5. Step 5: Solve for x
    x = 6,505,524.91/3,368.05
  6. Step 6: Final answer
    x = 1,931.54

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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.