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Finding the Fourth Proportional to 1,487.11, 2,051.67 and 897.43

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Solution

The fourth proportional to 1,487.11, 2,051.67 and 897.43 is: 1,238.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.11 : 2,051.67 = 897.43 : x
  2. Step 2: Convert to fraction form
    1,487.11/2,051.67 = 897.43/x
  3. Step 3: Cross multiply
    1,487.11x = 2,051.67 × 897.43
  4. Step 4: Simplify right side
    1,487.11x = 1,841,228.44
  5. Step 5: Solve for x
    x = 1,841,228.44/1,487.11
  6. Step 6: Final answer
    x = 1,238.13

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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.