Home / 1,588.11-2,192.31-999.51

Finding the Fourth Proportional to 1,588.11, 2,192.31 and 999.51

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Solution

The fourth proportional to 1,588.11, 2,192.31 and 999.51 is: 1,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.11 : 2,192.31 = 999.51 : x
  2. Step 2: Convert to fraction form
    1,588.11/2,192.31 = 999.51/x
  3. Step 3: Cross multiply
    1,588.11x = 2,192.31 × 999.51
  4. Step 4: Simplify right side
    1,588.11x = 2,191,235.77
  5. Step 5: Solve for x
    x = 2,191,235.77/1,588.11
  6. Step 6: Final answer
    x = 1,379.78

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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.