Home / 8,085.30-11,131.63-6,290.58

Finding the Fourth Proportional to 8,085.30, 11,131.63 and 6,290.58

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Solution

The fourth proportional to 8,085.30, 11,131.63 and 6,290.58 is: 8,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.30 : 11,131.63 = 6,290.58 : x
  2. Step 2: Convert to fraction form
    8,085.30/11,131.63 = 6,290.58/x
  3. Step 3: Cross multiply
    8,085.30x = 11,131.63 × 6,290.58
  4. Step 4: Simplify right side
    8,085.30x = 70,024,409.05
  5. Step 5: Solve for x
    x = 70,024,409.05/8,085.30
  6. Step 6: Final answer
    x = 8,660.71

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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.