Home / 7,279.78-10,919.64-2,086.06

Finding the Fourth Proportional to 7,279.78, 10,919.64 and 2,086.06

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Solution

The fourth proportional to 7,279.78, 10,919.64 and 2,086.06 is: 3,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.78 : 10,919.64 = 2,086.06 : x
  2. Step 2: Convert to fraction form
    7,279.78/10,919.64 = 2,086.06/x
  3. Step 3: Cross multiply
    7,279.78x = 10,919.64 × 2,086.06
  4. Step 4: Simplify right side
    7,279.78x = 22,779,024.22
  5. Step 5: Solve for x
    x = 22,779,024.22/7,279.78
  6. Step 6: Final answer
    x = 3,129.08

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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.