Home / 3,522.80-5,285.10-1,331.55

Finding the Fourth Proportional to 3,522.80, 5,285.10 and 1,331.55

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Solution

The fourth proportional to 3,522.80, 5,285.10 and 1,331.55 is: 1,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,522.80 : 5,285.10 = 1,331.55 : x
  2. Step 2: Convert to fraction form
    3,522.80/5,285.10 = 1,331.55/x
  3. Step 3: Cross multiply
    3,522.80x = 5,285.10 × 1,331.55
  4. Step 4: Simplify right side
    3,522.80x = 7,037,374.91
  5. Step 5: Solve for x
    x = 7,037,374.91/3,522.80
  6. Step 6: Final answer
    x = 1,997.67

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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.