Home / 3,607.05-4,977.77-2,115.85

Finding the Fourth Proportional to 3,607.05, 4,977.77 and 2,115.85

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Solution

The fourth proportional to 3,607.05, 4,977.77 and 2,115.85 is: 2,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.05 : 4,977.77 = 2,115.85 : x
  2. Step 2: Convert to fraction form
    3,607.05/4,977.77 = 2,115.85/x
  3. Step 3: Cross multiply
    3,607.05x = 4,977.77 × 2,115.85
  4. Step 4: Simplify right side
    3,607.05x = 10,532,204.08
  5. Step 5: Solve for x
    x = 10,532,204.08/3,607.05
  6. Step 6: Final answer
    x = 2,919.89

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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.