Home / 2,174.40-3,261.60-2,145.60

Finding the Fourth Proportional to 2,174.40, 3,261.60 and 2,145.60

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Solution

The fourth proportional to 2,174.40, 3,261.60 and 2,145.60 is: 3,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.40 : 3,261.60 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    2,174.40/3,261.60 = 2,145.60/x
  3. Step 3: Cross multiply
    2,174.40x = 3,261.60 × 2,145.60
  4. Step 4: Simplify right side
    2,174.40x = 6,998,088.96
  5. Step 5: Solve for x
    x = 6,998,088.96/2,174.40
  6. Step 6: Final answer
    x = 3,218.40

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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.