Home / 3,128.32-4,692.54-1,485.03

Finding the Fourth Proportional to 3,128.32, 4,692.54 and 1,485.03

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Solution

The fourth proportional to 3,128.32, 4,692.54 and 1,485.03 is: 2,227.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.32 : 4,692.54 = 1,485.03 : x
  2. Step 2: Convert to fraction form
    3,128.32/4,692.54 = 1,485.03/x
  3. Step 3: Cross multiply
    3,128.32x = 4,692.54 × 1,485.03
  4. Step 4: Simplify right side
    3,128.32x = 6,968,562.68
  5. Step 5: Solve for x
    x = 6,968,562.68/3,128.32
  6. Step 6: Final answer
    x = 2,227.58

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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.