Home / 5,431.68-8,147.79-1,734.21

Finding the Fourth Proportional to 5,431.68, 8,147.79 and 1,734.21

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Solution

The fourth proportional to 5,431.68, 8,147.79 and 1,734.21 is: 2,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.68 : 8,147.79 = 1,734.21 : x
  2. Step 2: Convert to fraction form
    5,431.68/8,147.79 = 1,734.21/x
  3. Step 3: Cross multiply
    5,431.68x = 8,147.79 × 1,734.21
  4. Step 4: Simplify right side
    5,431.68x = 14,129,978.90
  5. Step 5: Solve for x
    x = 14,129,978.90/5,431.68
  6. Step 6: Final answer
    x = 2,601.40

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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.