Home / 1,323.21-1,980.68-976.92

Finding the Fourth Proportional to 1,323.21, 1,980.68 and 976.92

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Solution

The fourth proportional to 1,323.21, 1,980.68 and 976.92 is: 1,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.21 : 1,980.68 = 976.92 : x
  2. Step 2: Convert to fraction form
    1,323.21/1,980.68 = 976.92/x
  3. Step 3: Cross multiply
    1,323.21x = 1,980.68 × 976.92
  4. Step 4: Simplify right side
    1,323.21x = 1,934,961.02
  5. Step 5: Solve for x
    x = 1,934,961.02/1,323.21
  6. Step 6: Final answer
    x = 1,462.32

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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.