Home / 7,886.51-11,831.93-2,692.79

Finding the Fourth Proportional to 7,886.51, 11,831.93 and 2,692.79

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Solution

The fourth proportional to 7,886.51, 11,831.93 and 2,692.79 is: 4,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.51 : 11,831.93 = 2,692.79 : x
  2. Step 2: Convert to fraction form
    7,886.51/11,831.93 = 2,692.79/x
  3. Step 3: Cross multiply
    7,886.51x = 11,831.93 × 2,692.79
  4. Step 4: Simplify right side
    7,886.51x = 31,860,889.32
  5. Step 5: Solve for x
    x = 31,860,889.32/7,886.51
  6. Step 6: Final answer
    x = 4,039.92

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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.