Home / 3,749.12-5,173.78-2,155.88

Finding the Fourth Proportional to 3,749.12, 5,173.78 and 2,155.88

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Solution

The fourth proportional to 3,749.12, 5,173.78 and 2,155.88 is: 2,975.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.12 : 5,173.78 = 2,155.88 : x
  2. Step 2: Convert to fraction form
    3,749.12/5,173.78 = 2,155.88/x
  3. Step 3: Cross multiply
    3,749.12x = 5,173.78 × 2,155.88
  4. Step 4: Simplify right side
    3,749.12x = 11,154,048.83
  5. Step 5: Solve for x
    x = 11,154,048.83/3,749.12
  6. Step 6: Final answer
    x = 2,975.11

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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.