Home / 3,780.07-5,216.23-2,078.70

Finding the Fourth Proportional to 3,780.07, 5,216.23 and 2,078.70

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Solution

The fourth proportional to 3,780.07, 5,216.23 and 2,078.70 is: 2,868.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.07 : 5,216.23 = 2,078.70 : x
  2. Step 2: Convert to fraction form
    3,780.07/5,216.23 = 2,078.70/x
  3. Step 3: Cross multiply
    3,780.07x = 5,216.23 × 2,078.70
  4. Step 4: Simplify right side
    3,780.07x = 10,842,960.34
  5. Step 5: Solve for x
    x = 10,842,960.34/3,780.07
  6. Step 6: Final answer
    x = 2,868.46

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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.