Home / 3,187.23-4,758.71-2,990.40

Finding the Fourth Proportional to 3,187.23, 4,758.71 and 2,990.40

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Solution

The fourth proportional to 3,187.23, 4,758.71 and 2,990.40 is: 4,464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.23 : 4,758.71 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    3,187.23/4,758.71 = 2,990.40/x
  3. Step 3: Cross multiply
    3,187.23x = 4,758.71 × 2,990.40
  4. Step 4: Simplify right side
    3,187.23x = 14,230,431.43
  5. Step 5: Solve for x
    x = 14,230,431.43/3,187.23
  6. Step 6: Final answer
    x = 4,464.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.