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Finding the Fourth Proportional to 1,907.65, 2,858.64 and 1,127.83

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Solution

The fourth proportional to 1,907.65, 2,858.64 and 1,127.83 is: 1,690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.65 : 2,858.64 = 1,127.83 : x
  2. Step 2: Convert to fraction form
    1,907.65/2,858.64 = 1,127.83/x
  3. Step 3: Cross multiply
    1,907.65x = 2,858.64 × 1,127.83
  4. Step 4: Simplify right side
    1,907.65x = 3,224,045.66
  5. Step 5: Solve for x
    x = 3,224,045.66/1,907.65
  6. Step 6: Final answer
    x = 1,690.06

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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.