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Finding the Fourth Proportional to 1,886.88, 2,831.54 and 792.17

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Solution

The fourth proportional to 1,886.88, 2,831.54 and 792.17 is: 1,188.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.88 : 2,831.54 = 792.17 : x
  2. Step 2: Convert to fraction form
    1,886.88/2,831.54 = 792.17/x
  3. Step 3: Cross multiply
    1,886.88x = 2,831.54 × 792.17
  4. Step 4: Simplify right side
    1,886.88x = 2,243,042.92
  5. Step 5: Solve for x
    x = 2,243,042.92/1,886.88
  6. Step 6: Final answer
    x = 1,188.76

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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.