Home / 6,421.62-9,622.95-2,912.70

Finding the Fourth Proportional to 6,421.62, 9,622.95 and 2,912.70

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Solution

The fourth proportional to 6,421.62, 9,622.95 and 2,912.70 is: 4,364.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.62 : 9,622.95 = 2,912.70 : x
  2. Step 2: Convert to fraction form
    6,421.62/9,622.95 = 2,912.70/x
  3. Step 3: Cross multiply
    6,421.62x = 9,622.95 × 2,912.70
  4. Step 4: Simplify right side
    6,421.62x = 28,028,766.47
  5. Step 5: Solve for x
    x = 28,028,766.47/6,421.62
  6. Step 6: Final answer
    x = 4,364.75

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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.