Home / 3,975.24-5,485.36-2,206.40

Finding the Fourth Proportional to 3,975.24, 5,485.36 and 2,206.40

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Solution

The fourth proportional to 3,975.24, 5,485.36 and 2,206.40 is: 3,044.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.24 : 5,485.36 = 2,206.40 : x
  2. Step 2: Convert to fraction form
    3,975.24/5,485.36 = 2,206.40/x
  3. Step 3: Cross multiply
    3,975.24x = 5,485.36 × 2,206.40
  4. Step 4: Simplify right side
    3,975.24x = 12,102,898.30
  5. Step 5: Solve for x
    x = 12,102,898.30/3,975.24
  6. Step 6: Final answer
    x = 3,044.57

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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.