Home / 5,210.88-7,190.98-2,820.86

Finding the Fourth Proportional to 5,210.88, 7,190.98 and 2,820.86

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Solution

The fourth proportional to 5,210.88, 7,190.98 and 2,820.86 is: 3,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.88 : 7,190.98 = 2,820.86 : x
  2. Step 2: Convert to fraction form
    5,210.88/7,190.98 = 2,820.86/x
  3. Step 3: Cross multiply
    5,210.88x = 7,190.98 × 2,820.86
  4. Step 4: Simplify right side
    5,210.88x = 20,284,731.80
  5. Step 5: Solve for x
    x = 20,284,731.80/5,210.88
  6. Step 6: Final answer
    x = 3,892.76

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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.