Home / 2,678.26-4,017.32-2,211.70

Finding the Fourth Proportional to 2,678.26, 4,017.32 and 2,211.70

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Solution

The fourth proportional to 2,678.26, 4,017.32 and 2,211.70 is: 3,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.26 : 4,017.32 = 2,211.70 : x
  2. Step 2: Convert to fraction form
    2,678.26/4,017.32 = 2,211.70/x
  3. Step 3: Cross multiply
    2,678.26x = 4,017.32 × 2,211.70
  4. Step 4: Simplify right side
    2,678.26x = 8,885,106.64
  5. Step 5: Solve for x
    x = 8,885,106.64/2,678.26
  6. Step 6: Final answer
    x = 3,317.49

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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.