Home / 2,666.07-3,999.29-1,279.98

Finding the Fourth Proportional to 2,666.07, 3,999.29 and 1,279.98

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Solution

The fourth proportional to 2,666.07, 3,999.29 and 1,279.98 is: 1,920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.07 : 3,999.29 = 1,279.98 : x
  2. Step 2: Convert to fraction form
    2,666.07/3,999.29 = 1,279.98/x
  3. Step 3: Cross multiply
    2,666.07x = 3,999.29 × 1,279.98
  4. Step 4: Simplify right side
    2,666.07x = 5,119,004.81
  5. Step 5: Solve for x
    x = 5,119,004.81/2,666.07
  6. Step 6: Final answer
    x = 1,920.06

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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.