Home / 3,390.20-4,679.09-2,211.25

Finding the Fourth Proportional to 3,390.20, 4,679.09 and 2,211.25

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Solution

The fourth proportional to 3,390.20, 4,679.09 and 2,211.25 is: 3,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.20 : 4,679.09 = 2,211.25 : x
  2. Step 2: Convert to fraction form
    3,390.20/4,679.09 = 2,211.25/x
  3. Step 3: Cross multiply
    3,390.20x = 4,679.09 × 2,211.25
  4. Step 4: Simplify right side
    3,390.20x = 10,346,637.76
  5. Step 5: Solve for x
    x = 10,346,637.76/3,390.20
  6. Step 6: Final answer
    x = 3,051.93

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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.