Home / 8,191.44-11,301.48-6,405.36

Finding the Fourth Proportional to 8,191.44, 11,301.48 and 6,405.36

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Solution

The fourth proportional to 8,191.44, 11,301.48 and 6,405.36 is: 8,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.44 : 11,301.48 = 6,405.36 : x
  2. Step 2: Convert to fraction form
    8,191.44/11,301.48 = 6,405.36/x
  3. Step 3: Cross multiply
    8,191.44x = 11,301.48 × 6,405.36
  4. Step 4: Simplify right side
    8,191.44x = 72,390,047.93
  5. Step 5: Solve for x
    x = 72,390,047.93/8,191.44
  6. Step 6: Final answer
    x = 8,837.28

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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.