Home / 4,187.13-5,780.37-3,240.78

Finding the Fourth Proportional to 4,187.13, 5,780.37 and 3,240.78

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Solution

The fourth proportional to 4,187.13, 5,780.37 and 3,240.78 is: 4,473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.13 : 5,780.37 = 3,240.78 : x
  2. Step 2: Convert to fraction form
    4,187.13/5,780.37 = 3,240.78/x
  3. Step 3: Cross multiply
    4,187.13x = 5,780.37 × 3,240.78
  4. Step 4: Simplify right side
    4,187.13x = 18,732,907.49
  5. Step 5: Solve for x
    x = 18,732,907.49/4,187.13
  6. Step 6: Final answer
    x = 4,473.93

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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.