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Finding the Fourth Proportional to 5,355.64, 7,394.70 and 3,866.86

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Solution

The fourth proportional to 5,355.64, 7,394.70 and 3,866.86 is: 5,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.64 : 7,394.70 = 3,866.86 : x
  2. Step 2: Convert to fraction form
    5,355.64/7,394.70 = 3,866.86/x
  3. Step 3: Cross multiply
    5,355.64x = 7,394.70 × 3,866.86
  4. Step 4: Simplify right side
    5,355.64x = 28,594,269.64
  5. Step 5: Solve for x
    x = 28,594,269.64/5,355.64
  6. Step 6: Final answer
    x = 5,339.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.