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Finding the Fourth Proportional to 1,265.87, 1,895.88 and 1,222.08

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Solution

The fourth proportional to 1,265.87, 1,895.88 and 1,222.08 is: 1,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.87 : 1,895.88 = 1,222.08 : x
  2. Step 2: Convert to fraction form
    1,265.87/1,895.88 = 1,222.08/x
  3. Step 3: Cross multiply
    1,265.87x = 1,895.88 × 1,222.08
  4. Step 4: Simplify right side
    1,265.87x = 2,316,917.03
  5. Step 5: Solve for x
    x = 2,316,917.03/1,265.87
  6. Step 6: Final answer
    x = 1,830.30

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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.