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Finding the Fourth Proportional to 4,863.40, 7,289.62 and 1,938.28

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Solution

The fourth proportional to 4,863.40, 7,289.62 and 1,938.28 is: 2,905.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,863.40 : 7,289.62 = 1,938.28 : x
  2. Step 2: Convert to fraction form
    4,863.40/7,289.62 = 1,938.28/x
  3. Step 3: Cross multiply
    4,863.40x = 7,289.62 × 1,938.28
  4. Step 4: Simplify right side
    4,863.40x = 14,129,324.65
  5. Step 5: Solve for x
    x = 14,129,324.65/4,863.40
  6. Step 6: Final answer
    x = 2,905.24

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1.5x scale

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.