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Finding the Fourth Proportional to 1,518.38, 2,095.91 and 897.38

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Solution

The fourth proportional to 1,518.38, 2,095.91 and 897.38 is: 1,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.38 : 2,095.91 = 897.38 : x
  2. Step 2: Convert to fraction form
    1,518.38/2,095.91 = 897.38/x
  3. Step 3: Cross multiply
    1,518.38x = 2,095.91 × 897.38
  4. Step 4: Simplify right side
    1,518.38x = 1,880,812.75
  5. Step 5: Solve for x
    x = 1,880,812.75/1,518.38
  6. Step 6: Final answer
    x = 1,238.70

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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.