Home / 3,128.08-4,692.40-1,828.80

Finding the Fourth Proportional to 3,128.08, 4,692.40 and 1,828.80

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Solution

The fourth proportional to 3,128.08, 4,692.40 and 1,828.80 is: 2,743.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.08 : 4,692.40 = 1,828.80 : x
  2. Step 2: Convert to fraction form
    3,128.08/4,692.40 = 1,828.80/x
  3. Step 3: Cross multiply
    3,128.08x = 4,692.40 × 1,828.80
  4. Step 4: Simplify right side
    3,128.08x = 8,581,461.12
  5. Step 5: Solve for x
    x = 8,581,461.12/3,128.08
  6. Step 6: Final answer
    x = 2,743.36

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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.