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Finding the Fourth Proportional to 1,927.02, 2,658 and 1,180.65

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Solution

The fourth proportional to 1,927.02, 2,658 and 1,180.65 is: 1,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.02 : 2,658 = 1,180.65 : x
  2. Step 2: Convert to fraction form
    1,927.02/2,658 = 1,180.65/x
  3. Step 3: Cross multiply
    1,927.02x = 2,658 × 1,180.65
  4. Step 4: Simplify right side
    1,927.02x = 3,138,167.70
  5. Step 5: Solve for x
    x = 3,138,167.70/1,927.02
  6. Step 6: Final answer
    x = 1,628.51

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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.