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Finding the Fourth Proportional to 2,553.99, 3,831.35 and 910.19

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Solution

The fourth proportional to 2,553.99, 3,831.35 and 910.19 is: 1,365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,553.99 : 3,831.35 = 910.19 : x
  2. Step 2: Convert to fraction form
    2,553.99/3,831.35 = 910.19/x
  3. Step 3: Cross multiply
    2,553.99x = 3,831.35 × 910.19
  4. Step 4: Simplify right side
    2,553.99x = 3,487,256.46
  5. Step 5: Solve for x
    x = 3,487,256.46/2,553.99
  6. Step 6: Final answer
    x = 1,365.42

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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.