Home / 4,415.45-6,623.17-1,128.55

Finding the Fourth Proportional to 4,415.45, 6,623.17 and 1,128.55

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Solution

The fourth proportional to 4,415.45, 6,623.17 and 1,128.55 is: 1,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.45 : 6,623.17 = 1,128.55 : x
  2. Step 2: Convert to fraction form
    4,415.45/6,623.17 = 1,128.55/x
  3. Step 3: Cross multiply
    4,415.45x = 6,623.17 × 1,128.55
  4. Step 4: Simplify right side
    4,415.45x = 7,474,578.50
  5. Step 5: Solve for x
    x = 7,474,578.50/4,415.45
  6. Step 6: Final answer
    x = 1,692.82

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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.