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Finding the Fourth Proportional to 5,919.60, 8,167.80 and 3,435.60

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Solution

The fourth proportional to 5,919.60, 8,167.80 and 3,435.60 is: 4,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,919.60 : 8,167.80 = 3,435.60 : x
  2. Step 2: Convert to fraction form
    5,919.60/8,167.80 = 3,435.60/x
  3. Step 3: Cross multiply
    5,919.60x = 8,167.80 × 3,435.60
  4. Step 4: Simplify right side
    5,919.60x = 28,061,293.68
  5. Step 5: Solve for x
    x = 28,061,293.68/5,919.60
  6. Step 6: Final answer
    x = 4,740.40

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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.