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Finding the Fourth Proportional to 1,708.74, 2,559.92 and 976.09

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Solution

The fourth proportional to 1,708.74, 2,559.92 and 976.09 is: 1,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.74 : 2,559.92 = 976.09 : x
  2. Step 2: Convert to fraction form
    1,708.74/2,559.92 = 976.09/x
  3. Step 3: Cross multiply
    1,708.74x = 2,559.92 × 976.09
  4. Step 4: Simplify right side
    1,708.74x = 2,498,712.31
  5. Step 5: Solve for x
    x = 2,498,712.31/1,708.74
  6. Step 6: Final answer
    x = 1,462.31

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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.