Home / 7,820.10-11,731.86-2,625.84

Finding the Fourth Proportional to 7,820.10, 11,731.86 and 2,625.84

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Solution

The fourth proportional to 7,820.10, 11,731.86 and 2,625.84 is: 3,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.10 : 11,731.86 = 2,625.84 : x
  2. Step 2: Convert to fraction form
    7,820.10/11,731.86 = 2,625.84/x
  3. Step 3: Cross multiply
    7,820.10x = 11,731.86 × 2,625.84
  4. Step 4: Simplify right side
    7,820.10x = 30,805,987.26
  5. Step 5: Solve for x
    x = 30,805,987.26/7,820.10
  6. Step 6: Final answer
    x = 3,939.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.