Home / 7,887.16-11,831.28-2,696.68

Finding the Fourth Proportional to 7,887.16, 11,831.28 and 2,696.68

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Solution

The fourth proportional to 7,887.16, 11,831.28 and 2,696.68 is: 4,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.16 : 11,831.28 = 2,696.68 : x
  2. Step 2: Convert to fraction form
    7,887.16/11,831.28 = 2,696.68/x
  3. Step 3: Cross multiply
    7,887.16x = 11,831.28 × 2,696.68
  4. Step 4: Simplify right side
    7,887.16x = 31,905,176.15
  5. Step 5: Solve for x
    x = 31,905,176.15/7,887.16
  6. Step 6: Final answer
    x = 4,045.20

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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.