Home / 2,911.32-4,013.87-2,379.65

Finding the Fourth Proportional to 2,911.32, 4,013.87 and 2,379.65

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Solution

The fourth proportional to 2,911.32, 4,013.87 and 2,379.65 is: 3,280.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.32 : 4,013.87 = 2,379.65 : x
  2. Step 2: Convert to fraction form
    2,911.32/4,013.87 = 2,379.65/x
  3. Step 3: Cross multiply
    2,911.32x = 4,013.87 × 2,379.65
  4. Step 4: Simplify right side
    2,911.32x = 9,551,573.78
  5. Step 5: Solve for x
    x = 9,551,573.78/2,911.32
  6. Step 6: Final answer
    x = 3,280.84

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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.