Home / 3,147.99-4,345.14-2,100.05

Finding the Fourth Proportional to 3,147.99, 4,345.14 and 2,100.05

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Solution

The fourth proportional to 3,147.99, 4,345.14 and 2,100.05 is: 2,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.99 : 4,345.14 = 2,100.05 : x
  2. Step 2: Convert to fraction form
    3,147.99/4,345.14 = 2,100.05/x
  3. Step 3: Cross multiply
    3,147.99x = 4,345.14 × 2,100.05
  4. Step 4: Simplify right side
    3,147.99x = 9,124,979.03
  5. Step 5: Solve for x
    x = 9,124,979.03/3,147.99
  6. Step 6: Final answer
    x = 2,898.67

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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.