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Finding the Fourth Proportional to 4,881.62, 7,322.63 and 1,418.87

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Solution

The fourth proportional to 4,881.62, 7,322.63 and 1,418.87 is: 2,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.62 : 7,322.63 = 1,418.87 : x
  2. Step 2: Convert to fraction form
    4,881.62/7,322.63 = 1,418.87/x
  3. Step 3: Cross multiply
    4,881.62x = 7,322.63 × 1,418.87
  4. Step 4: Simplify right side
    4,881.62x = 10,389,816.32
  5. Step 5: Solve for x
    x = 10,389,816.32/4,881.62
  6. Step 6: Final answer
    x = 2,128.36

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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.