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Finding the Fourth Proportional to 1,762.58, 2,432.31 and 976.61

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Solution

The fourth proportional to 1,762.58, 2,432.31 and 976.61 is: 1,347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.58 : 2,432.31 = 976.61 : x
  2. Step 2: Convert to fraction form
    1,762.58/2,432.31 = 976.61/x
  3. Step 3: Cross multiply
    1,762.58x = 2,432.31 × 976.61
  4. Step 4: Simplify right side
    1,762.58x = 2,375,418.27
  5. Step 5: Solve for x
    x = 2,375,418.27/1,762.58
  6. Step 6: Final answer
    x = 1,347.69

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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.