Home / 5,387.60-8,081.40-4,091.60

Finding the Fourth Proportional to 5,387.60, 8,081.40 and 4,091.60

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Solution

The fourth proportional to 5,387.60, 8,081.40 and 4,091.60 is: 6,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.60 : 8,081.40 = 4,091.60 : x
  2. Step 2: Convert to fraction form
    5,387.60/8,081.40 = 4,091.60/x
  3. Step 3: Cross multiply
    5,387.60x = 8,081.40 × 4,091.60
  4. Step 4: Simplify right side
    5,387.60x = 33,065,856.24
  5. Step 5: Solve for x
    x = 33,065,856.24/5,387.60
  6. Step 6: Final answer
    x = 6,137.40

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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.