Home / 7,943.31-11,914.47-2,678.10

Finding the Fourth Proportional to 7,943.31, 11,914.47 and 2,678.10

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Solution

The fourth proportional to 7,943.31, 11,914.47 and 2,678.10 is: 4,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.31 : 11,914.47 = 2,678.10 : x
  2. Step 2: Convert to fraction form
    7,943.31/11,914.47 = 2,678.10/x
  3. Step 3: Cross multiply
    7,943.31x = 11,914.47 × 2,678.10
  4. Step 4: Simplify right side
    7,943.31x = 31,908,142.11
  5. Step 5: Solve for x
    x = 31,908,142.11/7,943.31
  6. Step 6: Final answer
    x = 4,016.98

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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.