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Finding the Fourth Proportional to 7,889.61, 11,835.65 and 2,343.51

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Solution

The fourth proportional to 7,889.61, 11,835.65 and 2,343.51 is: 3,515.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889.61 : 11,835.65 = 2,343.51 : x
  2. Step 2: Convert to fraction form
    7,889.61/11,835.65 = 2,343.51/x
  3. Step 3: Cross multiply
    7,889.61x = 11,835.65 × 2,343.51
  4. Step 4: Simplify right side
    7,889.61x = 27,736,969.99
  5. Step 5: Solve for x
    x = 27,736,969.99/7,889.61
  6. Step 6: Final answer
    x = 3,515.63

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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.