Home / 1,323.21-1,983.60-707.34

Finding the Fourth Proportional to 1,323.21, 1,983.60 and 707.34

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Solution

The fourth proportional to 1,323.21, 1,983.60 and 707.34 is: 1,060.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.21 : 1,983.60 = 707.34 : x
  2. Step 2: Convert to fraction form
    1,323.21/1,983.60 = 707.34/x
  3. Step 3: Cross multiply
    1,323.21x = 1,983.60 × 707.34
  4. Step 4: Simplify right side
    1,323.21x = 1,403,079.62
  5. Step 5: Solve for x
    x = 1,403,079.62/1,323.21
  6. Step 6: Final answer
    x = 1,060.36

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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.