Home / 2,115.02-3,173.21-1,019.50

Finding the Fourth Proportional to 2,115.02, 3,173.21 and 1,019.50

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Solution

The fourth proportional to 2,115.02, 3,173.21 and 1,019.50 is: 1,529.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.02 : 3,173.21 = 1,019.50 : x
  2. Step 2: Convert to fraction form
    2,115.02/3,173.21 = 1,019.50/x
  3. Step 3: Cross multiply
    2,115.02x = 3,173.21 × 1,019.50
  4. Step 4: Simplify right side
    2,115.02x = 3,235,087.60
  5. Step 5: Solve for x
    x = 3,235,087.60/2,115.02
  6. Step 6: Final answer
    x = 1,529.58

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Double scale
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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.