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Finding the Fourth Proportional to 3,873.18, 5,808.54 and 1,275.50

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Solution

The fourth proportional to 3,873.18, 5,808.54 and 1,275.50 is: 1,912.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.18 : 5,808.54 = 1,275.50 : x
  2. Step 2: Convert to fraction form
    3,873.18/5,808.54 = 1,275.50/x
  3. Step 3: Cross multiply
    3,873.18x = 5,808.54 × 1,275.50
  4. Step 4: Simplify right side
    3,873.18x = 7,408,792.77
  5. Step 5: Solve for x
    x = 7,408,792.77/3,873.18
  6. Step 6: Final answer
    x = 1,912.84

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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.