Home / 7,888.19-11,831.49-3,208.47

Finding the Fourth Proportional to 7,888.19, 11,831.49 and 3,208.47

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Solution

The fourth proportional to 7,888.19, 11,831.49 and 3,208.47 is: 4,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.19 : 11,831.49 = 3,208.47 : x
  2. Step 2: Convert to fraction form
    7,888.19/11,831.49 = 3,208.47/x
  3. Step 3: Cross multiply
    7,888.19x = 11,831.49 × 3,208.47
  4. Step 4: Simplify right side
    7,888.19x = 37,960,980.72
  5. Step 5: Solve for x
    x = 37,960,980.72/7,888.19
  6. Step 6: Final answer
    x = 4,812.38

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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.