Home / 1,176.65-1,634.68-1,165.95

Finding the Fourth Proportional to 1,176.65, 1,634.68 and 1,165.95

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Solution

The fourth proportional to 1,176.65, 1,634.68 and 1,165.95 is: 1,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.65 : 1,634.68 = 1,165.95 : x
  2. Step 2: Convert to fraction form
    1,176.65/1,634.68 = 1,165.95/x
  3. Step 3: Cross multiply
    1,176.65x = 1,634.68 × 1,165.95
  4. Step 4: Simplify right side
    1,176.65x = 1,905,941.14
  5. Step 5: Solve for x
    x = 1,905,941.14/1,176.65
  6. Step 6: Final answer
    x = 1,619.80

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.