Home / 5,460.20-8,191.40-2,172.68

Finding the Fourth Proportional to 5,460.20, 8,191.40 and 2,172.68

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Solution

The fourth proportional to 5,460.20, 8,191.40 and 2,172.68 is: 3,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,460.20 : 8,191.40 = 2,172.68 : x
  2. Step 2: Convert to fraction form
    5,460.20/8,191.40 = 2,172.68/x
  3. Step 3: Cross multiply
    5,460.20x = 8,191.40 × 2,172.68
  4. Step 4: Simplify right side
    5,460.20x = 17,797,290.95
  5. Step 5: Solve for x
    x = 17,797,290.95/5,460.20
  6. Step 6: Final answer
    x = 3,259.46

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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.