Home / 6,540.80-9,809.40-2,645.60

Finding the Fourth Proportional to 6,540.80, 9,809.40 and 2,645.60

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Solution

The fourth proportional to 6,540.80, 9,809.40 and 2,645.60 is: 3,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,540.80 : 9,809.40 = 2,645.60 : x
  2. Step 2: Convert to fraction form
    6,540.80/9,809.40 = 2,645.60/x
  3. Step 3: Cross multiply
    6,540.80x = 9,809.40 × 2,645.60
  4. Step 4: Simplify right side
    6,540.80x = 25,951,748.64
  5. Step 5: Solve for x
    x = 25,951,748.64/6,540.80
  6. Step 6: Final answer
    x = 3,967.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.