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Finding the Fourth Proportional to 8,699.86, 13,050.80 and 2,774.68

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Solution

The fourth proportional to 8,699.86, 13,050.80 and 2,774.68 is: 4,162.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.86 : 13,050.80 = 2,774.68 : x
  2. Step 2: Convert to fraction form
    8,699.86/13,050.80 = 2,774.68/x
  3. Step 3: Cross multiply
    8,699.86x = 13,050.80 × 2,774.68
  4. Step 4: Simplify right side
    8,699.86x = 36,211,714.62
  5. Step 5: Solve for x
    x = 36,211,714.62/8,699.86
  6. Step 6: Final answer
    x = 4,162.34

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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.