Home / 5,431.88-8,145.08-2,654.39

Finding the Fourth Proportional to 5,431.88, 8,145.08 and 2,654.39

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Solution

The fourth proportional to 5,431.88, 8,145.08 and 2,654.39 is: 3,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.88 : 8,145.08 = 2,654.39 : x
  2. Step 2: Convert to fraction form
    5,431.88/8,145.08 = 2,654.39/x
  3. Step 3: Cross multiply
    5,431.88x = 8,145.08 × 2,654.39
  4. Step 4: Simplify right side
    5,431.88x = 21,620,218.90
  5. Step 5: Solve for x
    x = 21,620,218.90/5,431.88
  6. Step 6: Final answer
    x = 3,980.25

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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.