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Finding the Fourth Proportional to 4,671.86, 6,999.86 and 2,819.08

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Solution

The fourth proportional to 4,671.86, 6,999.86 and 2,819.08 is: 4,223.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,671.86 : 6,999.86 = 2,819.08 : x
  2. Step 2: Convert to fraction form
    4,671.86/6,999.86 = 2,819.08/x
  3. Step 3: Cross multiply
    4,671.86x = 6,999.86 × 2,819.08
  4. Step 4: Simplify right side
    4,671.86x = 19,733,165.27
  5. Step 5: Solve for x
    x = 19,733,165.27/4,671.86
  6. Step 6: Final answer
    x = 4,223.83

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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.