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Finding the Fourth Proportional to 1,759.78, 2,428.48 and 973.83

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Solution

The fourth proportional to 1,759.78, 2,428.48 and 973.83 is: 1,343.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.78 : 2,428.48 = 973.83 : x
  2. Step 2: Convert to fraction form
    1,759.78/2,428.48 = 973.83/x
  3. Step 3: Cross multiply
    1,759.78x = 2,428.48 × 973.83
  4. Step 4: Simplify right side
    1,759.78x = 2,364,926.68
  5. Step 5: Solve for x
    x = 2,364,926.68/1,759.78
  6. Step 6: Final answer
    x = 1,343.88

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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.