Home / 5,405.79-8,111.87-2,285.59

Finding the Fourth Proportional to 5,405.79, 8,111.87 and 2,285.59

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Solution

The fourth proportional to 5,405.79, 8,111.87 and 2,285.59 is: 3,429.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.79 : 8,111.87 = 2,285.59 : x
  2. Step 2: Convert to fraction form
    5,405.79/8,111.87 = 2,285.59/x
  3. Step 3: Cross multiply
    5,405.79x = 8,111.87 × 2,285.59
  4. Step 4: Simplify right side
    5,405.79x = 18,540,408.95
  5. Step 5: Solve for x
    x = 18,540,408.95/5,405.79
  6. Step 6: Final answer
    x = 3,429.73

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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.