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Finding the Fourth Proportional to 8,474.86, 11,699.32 and 5,646.94

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Solution

The fourth proportional to 8,474.86, 11,699.32 and 5,646.94 is: 7,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.86 : 11,699.32 = 5,646.94 : x
  2. Step 2: Convert to fraction form
    8,474.86/11,699.32 = 5,646.94/x
  3. Step 3: Cross multiply
    8,474.86x = 11,699.32 × 5,646.94
  4. Step 4: Simplify right side
    8,474.86x = 66,065,358.08
  5. Step 5: Solve for x
    x = 66,065,358.08/8,474.86
  6. Step 6: Final answer
    x = 7,795.45

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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.