Home / 2,319.85-3,479.78-1,907.74

Finding the Fourth Proportional to 2,319.85, 3,479.78 and 1,907.74

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Solution

The fourth proportional to 2,319.85, 3,479.78 and 1,907.74 is: 2,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.85 : 3,479.78 = 1,907.74 : x
  2. Step 2: Convert to fraction form
    2,319.85/3,479.78 = 1,907.74/x
  3. Step 3: Cross multiply
    2,319.85x = 3,479.78 × 1,907.74
  4. Step 4: Simplify right side
    2,319.85x = 6,638,504.10
  5. Step 5: Solve for x
    x = 6,638,504.10/2,319.85
  6. Step 6: Final answer
    x = 2,861.61

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Similar ratio
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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.