Home / 5,331.20-8,000.40-3,477.80

Finding the Fourth Proportional to 5,331.20, 8,000.40 and 3,477.80

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Solution

The fourth proportional to 5,331.20, 8,000.40 and 3,477.80 is: 5,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,331.20 : 8,000.40 = 3,477.80 : x
  2. Step 2: Convert to fraction form
    5,331.20/8,000.40 = 3,477.80/x
  3. Step 3: Cross multiply
    5,331.20x = 8,000.40 × 3,477.80
  4. Step 4: Simplify right side
    5,331.20x = 27,823,791.12
  5. Step 5: Solve for x
    x = 27,823,791.12/5,331.20
  6. Step 6: Final answer
    x = 5,219.05

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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.