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Finding the Fourth Proportional to 1,880.97, 2,596.50 and 1,218.39

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Solution

The fourth proportional to 1,880.97, 2,596.50 and 1,218.39 is: 1,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.97 : 2,596.50 = 1,218.39 : x
  2. Step 2: Convert to fraction form
    1,880.97/2,596.50 = 1,218.39/x
  3. Step 3: Cross multiply
    1,880.97x = 2,596.50 × 1,218.39
  4. Step 4: Simplify right side
    1,880.97x = 3,163,549.64
  5. Step 5: Solve for x
    x = 3,163,549.64/1,880.97
  6. Step 6: Final answer
    x = 1,681.87

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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.