Home / 7,831.52-11,747.27-1,908.40

Finding the Fourth Proportional to 7,831.52, 11,747.27 and 1,908.40

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Solution

The fourth proportional to 7,831.52, 11,747.27 and 1,908.40 is: 2,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.52 : 11,747.27 = 1,908.40 : x
  2. Step 2: Convert to fraction form
    7,831.52/11,747.27 = 1,908.40/x
  3. Step 3: Cross multiply
    7,831.52x = 11,747.27 × 1,908.40
  4. Step 4: Simplify right side
    7,831.52x = 22,418,490.07
  5. Step 5: Solve for x
    x = 22,418,490.07/7,831.52
  6. Step 6: Final answer
    x = 2,862.60

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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.