Home / 3,749.63-5,174.48-2,178.02

Finding the Fourth Proportional to 3,749.63, 5,174.48 and 2,178.02

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Solution

The fourth proportional to 3,749.63, 5,174.48 and 2,178.02 is: 3,005.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.63 : 5,174.48 = 2,178.02 : x
  2. Step 2: Convert to fraction form
    3,749.63/5,174.48 = 2,178.02/x
  3. Step 3: Cross multiply
    3,749.63x = 5,174.48 × 2,178.02
  4. Step 4: Simplify right side
    3,749.63x = 11,270,139.31
  5. Step 5: Solve for x
    x = 11,270,139.31/3,749.63
  6. Step 6: Final answer
    x = 3,005.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.