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Finding the Fourth Proportional to 6,289.70, 8,680.02 and 3,457.40

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Solution

The fourth proportional to 6,289.70, 8,680.02 and 3,457.40 is: 4,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.70 : 8,680.02 = 3,457.40 : x
  2. Step 2: Convert to fraction form
    6,289.70/8,680.02 = 3,457.40/x
  3. Step 3: Cross multiply
    6,289.70x = 8,680.02 × 3,457.40
  4. Step 4: Simplify right side
    6,289.70x = 30,010,257.75
  5. Step 5: Solve for x
    x = 30,010,257.75/6,289.70
  6. Step 6: Final answer
    x = 4,771.33

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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.