Home / 2,431.80-3,647.70-2,287.80

Finding the Fourth Proportional to 2,431.80, 3,647.70 and 2,287.80

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Solution

The fourth proportional to 2,431.80, 3,647.70 and 2,287.80 is: 3,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.80 : 3,647.70 = 2,287.80 : x
  2. Step 2: Convert to fraction form
    2,431.80/3,647.70 = 2,287.80/x
  3. Step 3: Cross multiply
    2,431.80x = 3,647.70 × 2,287.80
  4. Step 4: Simplify right side
    2,431.80x = 8,345,208.06
  5. Step 5: Solve for x
    x = 8,345,208.06/2,431.80
  6. Step 6: Final answer
    x = 3,431.70

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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.