Home / 7,820.42-11,722.35-3,656.93

Finding the Fourth Proportional to 7,820.42, 11,722.35 and 3,656.93

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Solution

The fourth proportional to 7,820.42, 11,722.35 and 3,656.93 is: 5,481.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.42 : 11,722.35 = 3,656.93 : x
  2. Step 2: Convert to fraction form
    7,820.42/11,722.35 = 3,656.93/x
  3. Step 3: Cross multiply
    7,820.42x = 11,722.35 × 3,656.93
  4. Step 4: Simplify right side
    7,820.42x = 42,867,813.39
  5. Step 5: Solve for x
    x = 42,867,813.39/7,820.42
  6. Step 6: Final answer
    x = 5,481.52

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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.