Home / 7,941.78-11,913.75-2,748.06

Finding the Fourth Proportional to 7,941.78, 11,913.75 and 2,748.06

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Solution

The fourth proportional to 7,941.78, 11,913.75 and 2,748.06 is: 4,122.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,941.78 : 11,913.75 = 2,748.06 : x
  2. Step 2: Convert to fraction form
    7,941.78/11,913.75 = 2,748.06/x
  3. Step 3: Cross multiply
    7,941.78x = 11,913.75 × 2,748.06
  4. Step 4: Simplify right side
    7,941.78x = 32,739,699.83
  5. Step 5: Solve for x
    x = 32,739,699.83/7,941.78
  6. Step 6: Final answer
    x = 4,122.46

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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.