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Finding the Fourth Proportional to 3,085.84, 4,630.56 and 1,139.38

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Solution

The fourth proportional to 3,085.84, 4,630.56 and 1,139.38 is: 1,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.84 : 4,630.56 = 1,139.38 : x
  2. Step 2: Convert to fraction form
    3,085.84/4,630.56 = 1,139.38/x
  3. Step 3: Cross multiply
    3,085.84x = 4,630.56 × 1,139.38
  4. Step 4: Simplify right side
    3,085.84x = 5,275,967.45
  5. Step 5: Solve for x
    x = 5,275,967.45/3,085.84
  6. Step 6: Final answer
    x = 1,709.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.