Home / 6,421.94-9,629.55-3,135.62

Finding the Fourth Proportional to 6,421.94, 9,629.55 and 3,135.62

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Solution

The fourth proportional to 6,421.94, 9,629.55 and 3,135.62 is: 4,701.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.94 : 9,629.55 = 3,135.62 : x
  2. Step 2: Convert to fraction form
    6,421.94/9,629.55 = 3,135.62/x
  3. Step 3: Cross multiply
    6,421.94x = 9,629.55 × 3,135.62
  4. Step 4: Simplify right side
    6,421.94x = 30,194,609.57
  5. Step 5: Solve for x
    x = 30,194,609.57/6,421.94
  6. Step 6: Final answer
    x = 4,701.79

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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.