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Finding the Fourth Proportional to 1,897.64, 2,848.92 and 1,284.08

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Solution

The fourth proportional to 1,897.64, 2,848.92 and 1,284.08 is: 1,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.64 : 2,848.92 = 1,284.08 : x
  2. Step 2: Convert to fraction form
    1,897.64/2,848.92 = 1,284.08/x
  3. Step 3: Cross multiply
    1,897.64x = 2,848.92 × 1,284.08
  4. Step 4: Simplify right side
    1,897.64x = 3,658,241.19
  5. Step 5: Solve for x
    x = 3,658,241.19/1,897.64
  6. Step 6: Final answer
    x = 1,927.78

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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.