Home / 8,383.28-12,570.90-3,116.60

Finding the Fourth Proportional to 8,383.28, 12,570.90 and 3,116.60

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Solution

The fourth proportional to 8,383.28, 12,570.90 and 3,116.60 is: 4,673.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.28 : 12,570.90 = 3,116.60 : x
  2. Step 2: Convert to fraction form
    8,383.28/12,570.90 = 3,116.60/x
  3. Step 3: Cross multiply
    8,383.28x = 12,570.90 × 3,116.60
  4. Step 4: Simplify right side
    8,383.28x = 39,178,466.94
  5. Step 5: Solve for x
    x = 39,178,466.94/8,383.28
  6. Step 6: Final answer
    x = 4,673.41

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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.