Home / 7,678.71-11,517.51-2,055.96

Finding the Fourth Proportional to 7,678.71, 11,517.51 and 2,055.96

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Solution

The fourth proportional to 7,678.71, 11,517.51 and 2,055.96 is: 3,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.71 : 11,517.51 = 2,055.96 : x
  2. Step 2: Convert to fraction form
    7,678.71/11,517.51 = 2,055.96/x
  3. Step 3: Cross multiply
    7,678.71x = 11,517.51 × 2,055.96
  4. Step 4: Simplify right side
    7,678.71x = 23,679,539.86
  5. Step 5: Solve for x
    x = 23,679,539.86/7,678.71
  6. Step 6: Final answer
    x = 3,083.79

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1.5x scale

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.