Home / 5,118.63-7,678.62-1,831.29

Finding the Fourth Proportional to 5,118.63, 7,678.62 and 1,831.29

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Solution

The fourth proportional to 5,118.63, 7,678.62 and 1,831.29 is: 2,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.63 : 7,678.62 = 1,831.29 : x
  2. Step 2: Convert to fraction form
    5,118.63/7,678.62 = 1,831.29/x
  3. Step 3: Cross multiply
    5,118.63x = 7,678.62 × 1,831.29
  4. Step 4: Simplify right side
    5,118.63x = 14,061,780.02
  5. Step 5: Solve for x
    x = 14,061,780.02/5,118.63
  6. Step 6: Final answer
    x = 2,747.18

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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.