Home / 6,420.07-8,859.40-3,769.75

Finding the Fourth Proportional to 6,420.07, 8,859.40 and 3,769.75

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Solution

The fourth proportional to 6,420.07, 8,859.40 and 3,769.75 is: 5,202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.07 : 8,859.40 = 3,769.75 : x
  2. Step 2: Convert to fraction form
    6,420.07/8,859.40 = 3,769.75/x
  3. Step 3: Cross multiply
    6,420.07x = 8,859.40 × 3,769.75
  4. Step 4: Simplify right side
    6,420.07x = 33,397,723.15
  5. Step 5: Solve for x
    x = 33,397,723.15/6,420.07
  6. Step 6: Final answer
    x = 5,202.08

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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.