Home / 3,186.72-4,785.36-2,153.40

Finding the Fourth Proportional to 3,186.72, 4,785.36 and 2,153.40

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Solution

The fourth proportional to 3,186.72, 4,785.36 and 2,153.40 is: 3,233.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.72 : 4,785.36 = 2,153.40 : x
  2. Step 2: Convert to fraction form
    3,186.72/4,785.36 = 2,153.40/x
  3. Step 3: Cross multiply
    3,186.72x = 4,785.36 × 2,153.40
  4. Step 4: Simplify right side
    3,186.72x = 10,304,794.22
  5. Step 5: Solve for x
    x = 10,304,794.22/3,186.72
  6. Step 6: Final answer
    x = 3,233.67

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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.