Home / 5,431.94-8,147.91-3,485.42

Finding the Fourth Proportional to 5,431.94, 8,147.91 and 3,485.42

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Solution

The fourth proportional to 5,431.94, 8,147.91 and 3,485.42 is: 5,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.94 : 8,147.91 = 3,485.42 : x
  2. Step 2: Convert to fraction form
    5,431.94/8,147.91 = 3,485.42/x
  3. Step 3: Cross multiply
    5,431.94x = 8,147.91 × 3,485.42
  4. Step 4: Simplify right side
    5,431.94x = 28,398,888.47
  5. Step 5: Solve for x
    x = 28,398,888.47/5,431.94
  6. Step 6: Final answer
    x = 5,228.13

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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.