Home / 5,421.30-8,119.80-4,692.30

Finding the Fourth Proportional to 5,421.30, 8,119.80 and 4,692.30

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Solution

The fourth proportional to 5,421.30, 8,119.80 and 4,692.30 is: 7,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.30 : 8,119.80 = 4,692.30 : x
  2. Step 2: Convert to fraction form
    5,421.30/8,119.80 = 4,692.30/x
  3. Step 3: Cross multiply
    5,421.30x = 8,119.80 × 4,692.30
  4. Step 4: Simplify right side
    5,421.30x = 38,100,537.54
  5. Step 5: Solve for x
    x = 38,100,537.54/5,421.30
  6. Step 6: Final answer
    x = 7,027.93

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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.