Home / 3,381.45-5,070.78-1,189.67

Finding the Fourth Proportional to 3,381.45, 5,070.78 and 1,189.67

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Solution

The fourth proportional to 3,381.45, 5,070.78 and 1,189.67 is: 1,784.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.45 : 5,070.78 = 1,189.67 : x
  2. Step 2: Convert to fraction form
    3,381.45/5,070.78 = 1,189.67/x
  3. Step 3: Cross multiply
    3,381.45x = 5,070.78 × 1,189.67
  4. Step 4: Simplify right side
    3,381.45x = 6,032,529.49
  5. Step 5: Solve for x
    x = 6,032,529.49/3,381.45
  6. Step 6: Final answer
    x = 1,784.01

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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.