Home / 3,115.20-4,674.60-1,885.08

Finding the Fourth Proportional to 3,115.20, 4,674.60 and 1,885.08

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Solution

The fourth proportional to 3,115.20, 4,674.60 and 1,885.08 is: 2,828.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.20 : 4,674.60 = 1,885.08 : x
  2. Step 2: Convert to fraction form
    3,115.20/4,674.60 = 1,885.08/x
  3. Step 3: Cross multiply
    3,115.20x = 4,674.60 × 1,885.08
  4. Step 4: Simplify right side
    3,115.20x = 8,811,994.97
  5. Step 5: Solve for x
    x = 8,811,994.97/3,115.20
  6. Step 6: Final answer
    x = 2,828.71

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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.