Home / 8,139.13-11,231.93-4,554.07

Finding the Fourth Proportional to 8,139.13, 11,231.93 and 4,554.07

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Solution

The fourth proportional to 8,139.13, 11,231.93 and 4,554.07 is: 6,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.13 : 11,231.93 = 4,554.07 : x
  2. Step 2: Convert to fraction form
    8,139.13/11,231.93 = 4,554.07/x
  3. Step 3: Cross multiply
    8,139.13x = 11,231.93 × 4,554.07
  4. Step 4: Simplify right side
    8,139.13x = 51,150,978.76
  5. Step 5: Solve for x
    x = 51,150,978.76/8,139.13
  6. Step 6: Final answer
    x = 6,284.58

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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.