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Finding the Fourth Proportional to 4,880.75, 7,321.13 and 1,802.75

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Solution

The fourth proportional to 4,880.75, 7,321.13 and 1,802.75 is: 2,704.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.75 : 7,321.13 = 1,802.75 : x
  2. Step 2: Convert to fraction form
    4,880.75/7,321.13 = 1,802.75/x
  3. Step 3: Cross multiply
    4,880.75x = 7,321.13 × 1,802.75
  4. Step 4: Simplify right side
    4,880.75x = 13,198,167.11
  5. Step 5: Solve for x
    x = 13,198,167.11/4,880.75
  6. Step 6: Final answer
    x = 2,704.13

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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.