Home / 5,415.15-8,122.73-4,904.85

Finding the Fourth Proportional to 5,415.15, 8,122.73 and 4,904.85

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Solution

The fourth proportional to 5,415.15, 8,122.73 and 4,904.85 is: 7,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.15 : 8,122.73 = 4,904.85 : x
  2. Step 2: Convert to fraction form
    5,415.15/8,122.73 = 4,904.85/x
  3. Step 3: Cross multiply
    5,415.15x = 8,122.73 × 4,904.85
  4. Step 4: Simplify right side
    5,415.15x = 39,840,747.72
  5. Step 5: Solve for x
    x = 39,840,747.72/5,415.15
  6. Step 6: Final answer
    x = 7,357.28

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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.