Home / 5,215.77-7,820.57-2,097.25

Finding the Fourth Proportional to 5,215.77, 7,820.57 and 2,097.25

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Solution

The fourth proportional to 5,215.77, 7,820.57 and 2,097.25 is: 3,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.77 : 7,820.57 = 2,097.25 : x
  2. Step 2: Convert to fraction form
    5,215.77/7,820.57 = 2,097.25/x
  3. Step 3: Cross multiply
    5,215.77x = 7,820.57 × 2,097.25
  4. Step 4: Simplify right side
    5,215.77x = 16,401,676.12
  5. Step 5: Solve for x
    x = 16,401,676.12/5,215.77
  6. Step 6: Final answer
    x = 3,144.63

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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.