Home / 8,043.35-11,040.63-7,139.39

Finding the Fourth Proportional to 8,043.35, 11,040.63 and 7,139.39

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Solution

The fourth proportional to 8,043.35, 11,040.63 and 7,139.39 is: 9,799.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,043.35 : 11,040.63 = 7,139.39 : x
  2. Step 2: Convert to fraction form
    8,043.35/11,040.63 = 7,139.39/x
  3. Step 3: Cross multiply
    8,043.35x = 11,040.63 × 7,139.39
  4. Step 4: Simplify right side
    8,043.35x = 78,823,281.44
  5. Step 5: Solve for x
    x = 78,823,281.44/8,043.35
  6. Step 6: Final answer
    x = 9,799.81

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.