Home / 3,749.61-5,172.75-2,177.40

Finding the Fourth Proportional to 3,749.61, 5,172.75 and 2,177.40

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Solution

The fourth proportional to 3,749.61, 5,172.75 and 2,177.40 is: 3,003.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.61 : 5,172.75 = 2,177.40 : x
  2. Step 2: Convert to fraction form
    3,749.61/5,172.75 = 2,177.40/x
  3. Step 3: Cross multiply
    3,749.61x = 5,172.75 × 2,177.40
  4. Step 4: Simplify right side
    3,749.61x = 11,263,157.08
  5. Step 5: Solve for x
    x = 11,263,157.08/3,749.61
  6. Step 6: Final answer
    x = 3,003.82

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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.