Home / 5,018.80-7,529.40-2,419.60

Finding the Fourth Proportional to 5,018.80, 7,529.40 and 2,419.60

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Solution

The fourth proportional to 5,018.80, 7,529.40 and 2,419.60 is: 3,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,018.80 : 7,529.40 = 2,419.60 : x
  2. Step 2: Convert to fraction form
    5,018.80/7,529.40 = 2,419.60/x
  3. Step 3: Cross multiply
    5,018.80x = 7,529.40 × 2,419.60
  4. Step 4: Simplify right side
    5,018.80x = 18,218,136.24
  5. Step 5: Solve for x
    x = 18,218,136.24/5,018.80
  6. Step 6: Final answer
    x = 3,629.98

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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.