Home / 5,780.34-7,976.85-3,127.74

Finding the Fourth Proportional to 5,780.34, 7,976.85 and 3,127.74

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Solution

The fourth proportional to 5,780.34, 7,976.85 and 3,127.74 is: 4,316.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.34 : 7,976.85 = 3,127.74 : x
  2. Step 2: Convert to fraction form
    5,780.34/7,976.85 = 3,127.74/x
  3. Step 3: Cross multiply
    5,780.34x = 7,976.85 × 3,127.74
  4. Step 4: Simplify right side
    5,780.34x = 24,949,512.82
  5. Step 5: Solve for x
    x = 24,949,512.82/5,780.34
  6. Step 6: Final answer
    x = 4,316.27

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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.