Home / 1,523.80-2,102.79-999.46

Finding the Fourth Proportional to 1,523.80, 2,102.79 and 999.46

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Solution

The fourth proportional to 1,523.80, 2,102.79 and 999.46 is: 1,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.80 : 2,102.79 = 999.46 : x
  2. Step 2: Convert to fraction form
    1,523.80/2,102.79 = 999.46/x
  3. Step 3: Cross multiply
    1,523.80x = 2,102.79 × 999.46
  4. Step 4: Simplify right side
    1,523.80x = 2,101,654.49
  5. Step 5: Solve for x
    x = 2,101,654.49/1,523.80
  6. Step 6: Final answer
    x = 1,379.22

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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.