Home / 2,861.46-3,949.97-2,421.63

Finding the Fourth Proportional to 2,861.46, 3,949.97 and 2,421.63

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Solution

The fourth proportional to 2,861.46, 3,949.97 and 2,421.63 is: 3,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.46 : 3,949.97 = 2,421.63 : x
  2. Step 2: Convert to fraction form
    2,861.46/3,949.97 = 2,421.63/x
  3. Step 3: Cross multiply
    2,861.46x = 3,949.97 × 2,421.63
  4. Step 4: Simplify right side
    2,861.46x = 9,565,353.74
  5. Step 5: Solve for x
    x = 9,565,353.74/2,861.46
  6. Step 6: Final answer
    x = 3,342.82

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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.