Home / 7,820.21-10,795.38-4,991.32

Finding the Fourth Proportional to 7,820.21, 10,795.38 and 4,991.32

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Solution

The fourth proportional to 7,820.21, 10,795.38 and 4,991.32 is: 6,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.21 : 10,795.38 = 4,991.32 : x
  2. Step 2: Convert to fraction form
    7,820.21/10,795.38 = 4,991.32/x
  3. Step 3: Cross multiply
    7,820.21x = 10,795.38 × 4,991.32
  4. Step 4: Simplify right side
    7,820.21x = 53,883,190.88
  5. Step 5: Solve for x
    x = 53,883,190.88/7,820.21
  6. Step 6: Final answer
    x = 6,890.25

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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.