Home / 7,869.86-11,796.59-5,405.38

Finding the Fourth Proportional to 7,869.86, 11,796.59 and 5,405.38

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Solution

The fourth proportional to 7,869.86, 11,796.59 and 5,405.38 is: 8,102.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.86 : 11,796.59 = 5,405.38 : x
  2. Step 2: Convert to fraction form
    7,869.86/11,796.59 = 5,405.38/x
  3. Step 3: Cross multiply
    7,869.86x = 11,796.59 × 5,405.38
  4. Step 4: Simplify right side
    7,869.86x = 63,765,071.63
  5. Step 5: Solve for x
    x = 63,765,071.63/7,869.86
  6. Step 6: Final answer
    x = 8,102.44

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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.