Home / 7,921.12-11,881.63-2,374.47

Finding the Fourth Proportional to 7,921.12, 11,881.63 and 2,374.47

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Solution

The fourth proportional to 7,921.12, 11,881.63 and 2,374.47 is: 3,561.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.12 : 11,881.63 = 2,374.47 : x
  2. Step 2: Convert to fraction form
    7,921.12/11,881.63 = 2,374.47/x
  3. Step 3: Cross multiply
    7,921.12x = 11,881.63 × 2,374.47
  4. Step 4: Simplify right side
    7,921.12x = 28,212,573.99
  5. Step 5: Solve for x
    x = 28,212,573.99/7,921.12
  6. Step 6: Final answer
    x = 3,561.69

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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.