Home / 8,105.52-11,190.44-5,315.88

Finding the Fourth Proportional to 8,105.52, 11,190.44 and 5,315.88

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Solution

The fourth proportional to 8,105.52, 11,190.44 and 5,315.88 is: 7,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.52 : 11,190.44 = 5,315.88 : x
  2. Step 2: Convert to fraction form
    8,105.52/11,190.44 = 5,315.88/x
  3. Step 3: Cross multiply
    8,105.52x = 11,190.44 × 5,315.88
  4. Step 4: Simplify right side
    8,105.52x = 59,487,036.19
  5. Step 5: Solve for x
    x = 59,487,036.19/8,105.52
  6. Step 6: Final answer
    x = 7,339.08

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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.