Home / 2,678.24-4,016.74-1,290.68

Finding the Fourth Proportional to 2,678.24, 4,016.74 and 1,290.68

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Solution

The fourth proportional to 2,678.24, 4,016.74 and 1,290.68 is: 1,935.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.24 : 4,016.74 = 1,290.68 : x
  2. Step 2: Convert to fraction form
    2,678.24/4,016.74 = 1,290.68/x
  3. Step 3: Cross multiply
    2,678.24x = 4,016.74 × 1,290.68
  4. Step 4: Simplify right side
    2,678.24x = 5,184,325.98
  5. Step 5: Solve for x
    x = 5,184,325.98/2,678.24
  6. Step 6: Final answer
    x = 1,935.72

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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.