Home / 8,465.23-11,687.79-5,279.77

Finding the Fourth Proportional to 8,465.23, 11,687.79 and 5,279.77

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Solution

The fourth proportional to 8,465.23, 11,687.79 and 5,279.77 is: 7,289.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.23 : 11,687.79 = 5,279.77 : x
  2. Step 2: Convert to fraction form
    8,465.23/11,687.79 = 5,279.77/x
  3. Step 3: Cross multiply
    8,465.23x = 11,687.79 × 5,279.77
  4. Step 4: Simplify right side
    8,465.23x = 61,708,843.01
  5. Step 5: Solve for x
    x = 61,708,843.01/8,465.23
  6. Step 6: Final answer
    x = 7,289.68

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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.