Home / 2,678.41-4,018.60-1,118.57

Finding the Fourth Proportional to 2,678.41, 4,018.60 and 1,118.57

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Solution

The fourth proportional to 2,678.41, 4,018.60 and 1,118.57 is: 1,678.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.41 : 4,018.60 = 1,118.57 : x
  2. Step 2: Convert to fraction form
    2,678.41/4,018.60 = 1,118.57/x
  3. Step 3: Cross multiply
    2,678.41x = 4,018.60 × 1,118.57
  4. Step 4: Simplify right side
    2,678.41x = 4,495,079.81
  5. Step 5: Solve for x
    x = 4,495,079.81/2,678.41
  6. Step 6: Final answer
    x = 1,678.27

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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.