Home / 3,609.08-4,975.08-2,821.76

Finding the Fourth Proportional to 3,609.08, 4,975.08 and 2,821.76

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Solution

The fourth proportional to 3,609.08, 4,975.08 and 2,821.76 is: 3,889.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.08 : 4,975.08 = 2,821.76 : x
  2. Step 2: Convert to fraction form
    3,609.08/4,975.08 = 2,821.76/x
  3. Step 3: Cross multiply
    3,609.08x = 4,975.08 × 2,821.76
  4. Step 4: Simplify right side
    3,609.08x = 14,038,481.74
  5. Step 5: Solve for x
    x = 14,038,481.74/3,609.08
  6. Step 6: Final answer
    x = 3,889.77

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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.