Home / 2,678.38-3,696.21-1,499.45

Finding the Fourth Proportional to 2,678.38, 3,696.21 and 1,499.45

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Solution

The fourth proportional to 2,678.38, 3,696.21 and 1,499.45 is: 2,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.38 : 3,696.21 = 1,499.45 : x
  2. Step 2: Convert to fraction form
    2,678.38/3,696.21 = 1,499.45/x
  3. Step 3: Cross multiply
    2,678.38x = 3,696.21 × 1,499.45
  4. Step 4: Simplify right side
    2,678.38x = 5,542,263.60
  5. Step 5: Solve for x
    x = 5,542,263.60/2,678.38
  6. Step 6: Final answer
    x = 2,069.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.