Home / 5,780.37-7,976.90-3,127.78

Finding the Fourth Proportional to 5,780.37, 7,976.90 and 3,127.78

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Solution

The fourth proportional to 5,780.37, 7,976.90 and 3,127.78 is: 4,316.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.37 : 7,976.90 = 3,127.78 : x
  2. Step 2: Convert to fraction form
    5,780.37/7,976.90 = 3,127.78/x
  3. Step 3: Cross multiply
    5,780.37x = 7,976.90 × 3,127.78
  4. Step 4: Simplify right side
    5,780.37x = 24,949,932.76
  5. Step 5: Solve for x
    x = 24,949,932.76/5,780.37
  6. Step 6: Final answer
    x = 4,316.32

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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.