Home / 3,128.04-4,692.08-2,151.20

Finding the Fourth Proportional to 3,128.04, 4,692.08 and 2,151.20

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Solution

The fourth proportional to 3,128.04, 4,692.08 and 2,151.20 is: 3,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.04 : 4,692.08 = 2,151.20 : x
  2. Step 2: Convert to fraction form
    3,128.04/4,692.08 = 2,151.20/x
  3. Step 3: Cross multiply
    3,128.04x = 4,692.08 × 2,151.20
  4. Step 4: Simplify right side
    3,128.04x = 10,093,602.50
  5. Step 5: Solve for x
    x = 10,093,602.50/3,128.04
  6. Step 6: Final answer
    x = 3,226.81

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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.