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Finding the Fourth Proportional to 3,898.94, 5,848.74 and 1,125.90

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Solution

The fourth proportional to 3,898.94, 5,848.74 and 1,125.90 is: 1,688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.94 : 5,848.74 = 1,125.90 : x
  2. Step 2: Convert to fraction form
    3,898.94/5,848.74 = 1,125.90/x
  3. Step 3: Cross multiply
    3,898.94x = 5,848.74 × 1,125.90
  4. Step 4: Simplify right side
    3,898.94x = 6,585,096.37
  5. Step 5: Solve for x
    x = 6,585,096.37/3,898.94
  6. Step 6: Final answer
    x = 1,688.95

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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.