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Finding the Fourth Proportional to 1,926.51, 2,887.69 and 830.95

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Solution

The fourth proportional to 1,926.51, 2,887.69 and 830.95 is: 1,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.51 : 2,887.69 = 830.95 : x
  2. Step 2: Convert to fraction form
    1,926.51/2,887.69 = 830.95/x
  3. Step 3: Cross multiply
    1,926.51x = 2,887.69 × 830.95
  4. Step 4: Simplify right side
    1,926.51x = 2,399,526.01
  5. Step 5: Solve for x
    x = 2,399,526.01/1,926.51
  6. Step 6: Final answer
    x = 1,245.53

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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.