Home / 8,279.03-11,429.30-6,386.37

Finding the Fourth Proportional to 8,279.03, 11,429.30 and 6,386.37

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Solution

The fourth proportional to 8,279.03, 11,429.30 and 6,386.37 is: 8,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.03 : 11,429.30 = 6,386.37 : x
  2. Step 2: Convert to fraction form
    8,279.03/11,429.30 = 6,386.37/x
  3. Step 3: Cross multiply
    8,279.03x = 11,429.30 × 6,386.37
  4. Step 4: Simplify right side
    8,279.03x = 72,991,694.10
  5. Step 5: Solve for x
    x = 72,991,694.10/8,279.03
  6. Step 6: Final answer
    x = 8,816.45

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1.5x scale

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.