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Finding the Fourth Proportional to 2,554.45, 3,831.56 and 910.97

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Solution

The fourth proportional to 2,554.45, 3,831.56 and 910.97 is: 1,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554.45 : 3,831.56 = 910.97 : x
  2. Step 2: Convert to fraction form
    2,554.45/3,831.56 = 910.97/x
  3. Step 3: Cross multiply
    2,554.45x = 3,831.56 × 910.97
  4. Step 4: Simplify right side
    2,554.45x = 3,490,430.29
  5. Step 5: Solve for x
    x = 3,490,430.29/2,554.45
  6. Step 6: Final answer
    x = 1,366.41

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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.