Home / 3,609.06-4,980.65-2,116.77

Finding the Fourth Proportional to 3,609.06, 4,980.65 and 2,116.77

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Solution

The fourth proportional to 3,609.06, 4,980.65 and 2,116.77 is: 2,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.06 : 4,980.65 = 2,116.77 : x
  2. Step 2: Convert to fraction form
    3,609.06/4,980.65 = 2,116.77/x
  3. Step 3: Cross multiply
    3,609.06x = 4,980.65 × 2,116.77
  4. Step 4: Simplify right side
    3,609.06x = 10,542,890.50
  5. Step 5: Solve for x
    x = 10,542,890.50/3,609.06
  6. Step 6: Final answer
    x = 2,921.23

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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.