Home / 3,529.55-5,300.40-3,420.20

Finding the Fourth Proportional to 3,529.55, 5,300.40 and 3,420.20

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Solution

The fourth proportional to 3,529.55, 5,300.40 and 3,420.20 is: 5,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,529.55 : 5,300.40 = 3,420.20 : x
  2. Step 2: Convert to fraction form
    3,529.55/5,300.40 = 3,420.20/x
  3. Step 3: Cross multiply
    3,529.55x = 5,300.40 × 3,420.20
  4. Step 4: Simplify right side
    3,529.55x = 18,128,428.08
  5. Step 5: Solve for x
    x = 18,128,428.08/3,529.55
  6. Step 6: Final answer
    x = 5,136.19

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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.