Home / 3,116.49-4,291.58-2,784.80

Finding the Fourth Proportional to 3,116.49, 4,291.58 and 2,784.80

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Solution

The fourth proportional to 3,116.49, 4,291.58 and 2,784.80 is: 3,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.49 : 4,291.58 = 2,784.80 : x
  2. Step 2: Convert to fraction form
    3,116.49/4,291.58 = 2,784.80/x
  3. Step 3: Cross multiply
    3,116.49x = 4,291.58 × 2,784.80
  4. Step 4: Simplify right side
    3,116.49x = 11,951,156.60
  5. Step 5: Solve for x
    x = 11,951,156.60/3,116.49
  6. Step 6: Final answer
    x = 3,834.81

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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.