Home / 3,188.64-4,782.98-2,778.09

Finding the Fourth Proportional to 3,188.64, 4,782.98 and 2,778.09

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Solution

The fourth proportional to 3,188.64, 4,782.98 and 2,778.09 is: 4,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.64 : 4,782.98 = 2,778.09 : x
  2. Step 2: Convert to fraction form
    3,188.64/4,782.98 = 2,778.09/x
  3. Step 3: Cross multiply
    3,188.64x = 4,782.98 × 2,778.09
  4. Step 4: Simplify right side
    3,188.64x = 13,287,548.91
  5. Step 5: Solve for x
    x = 13,287,548.91/3,188.64
  6. Step 6: Final answer
    x = 4,167.15

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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.