Home / 4,415.00-6,622.38-1,128.21

Finding the Fourth Proportional to 4,415.00, 6,622.38 and 1,128.21

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Solution

The fourth proportional to 4,415.00, 6,622.38 and 1,128.21 is: 1,692.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.00 : 6,622.38 = 1,128.21 : x
  2. Step 2: Convert to fraction form
    4,415.00/6,622.38 = 1,128.21/x
  3. Step 3: Cross multiply
    4,415.00x = 6,622.38 × 1,128.21
  4. Step 4: Simplify right side
    4,415.00x = 7,471,435.34
  5. Step 5: Solve for x
    x = 7,471,435.34/4,415.00
  6. Step 6: Final answer
    x = 1,692.29

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Double scale
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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.