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Finding the Fourth Proportional to 7,798.86, 11,699.64 and 3,416.22

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Solution

The fourth proportional to 7,798.86, 11,699.64 and 3,416.22 is: 5,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.86 : 11,699.64 = 3,416.22 : x
  2. Step 2: Convert to fraction form
    7,798.86/11,699.64 = 3,416.22/x
  3. Step 3: Cross multiply
    7,798.86x = 11,699.64 × 3,416.22
  4. Step 4: Simplify right side
    7,798.86x = 39,968,544.16
  5. Step 5: Solve for x
    x = 39,968,544.16/7,798.86
  6. Step 6: Final answer
    x = 5,124.92

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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.