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Finding the Fourth Proportional to 2,554.51, 3,831.80 and 705.61

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Solution

The fourth proportional to 2,554.51, 3,831.80 and 705.61 is: 1,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554.51 : 3,831.80 = 705.61 : x
  2. Step 2: Convert to fraction form
    2,554.51/3,831.80 = 705.61/x
  3. Step 3: Cross multiply
    2,554.51x = 3,831.80 × 705.61
  4. Step 4: Simplify right side
    2,554.51x = 2,703,756.40
  5. Step 5: Solve for x
    x = 2,703,756.40/2,554.51
  6. Step 6: Final answer
    x = 1,058.42

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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.