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Finding the Fourth Proportional to 4,572.81, 6,861.02 and 1,940.90

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Solution

The fourth proportional to 4,572.81, 6,861.02 and 1,940.90 is: 2,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,572.81 : 6,861.02 = 1,940.90 : x
  2. Step 2: Convert to fraction form
    4,572.81/6,861.02 = 1,940.90/x
  3. Step 3: Cross multiply
    4,572.81x = 6,861.02 × 1,940.90
  4. Step 4: Simplify right side
    4,572.81x = 13,316,509.71
  5. Step 5: Solve for x
    x = 13,316,509.71/4,572.81
  6. Step 6: Final answer
    x = 2,912.11

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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.