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Finding the Fourth Proportional to 9,819.70, 13,555.02 and 6,284.86

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Solution

The fourth proportional to 9,819.70, 13,555.02 and 6,284.86 is: 8,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,819.70 : 13,555.02 = 6,284.86 : x
  2. Step 2: Convert to fraction form
    9,819.70/13,555.02 = 6,284.86/x
  3. Step 3: Cross multiply
    9,819.70x = 13,555.02 × 6,284.86
  4. Step 4: Simplify right side
    9,819.70x = 85,191,403.00
  5. Step 5: Solve for x
    x = 85,191,403.00/9,819.70
  6. Step 6: Final answer
    x = 8,675.56

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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.