Home / 5,431.80-8,147.70-2,834.40

Finding the Fourth Proportional to 5,431.80, 8,147.70 and 2,834.40

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Solution

The fourth proportional to 5,431.80, 8,147.70 and 2,834.40 is: 4,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.80 : 8,147.70 = 2,834.40 : x
  2. Step 2: Convert to fraction form
    5,431.80/8,147.70 = 2,834.40/x
  3. Step 3: Cross multiply
    5,431.80x = 8,147.70 × 2,834.40
  4. Step 4: Simplify right side
    5,431.80x = 23,093,840.88
  5. Step 5: Solve for x
    x = 23,093,840.88/5,431.80
  6. Step 6: Final answer
    x = 4,251.60

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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.