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Finding the Fourth Proportional to 3,536.25, 4,880.43 and 2,139

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Solution

The fourth proportional to 3,536.25, 4,880.43 and 2,139 is: 2,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,536.25 : 4,880.43 = 2,139 : x
  2. Step 2: Convert to fraction form
    3,536.25/4,880.43 = 2,139/x
  3. Step 3: Cross multiply
    3,536.25x = 4,880.43 × 2,139
  4. Step 4: Simplify right side
    3,536.25x = 10,439,239.77
  5. Step 5: Solve for x
    x = 10,439,239.77/3,536.25
  6. Step 6: Final answer
    x = 2,952.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.