Home / 5,128.41-7,077.21-2,770.55

Finding the Fourth Proportional to 5,128.41, 7,077.21 and 2,770.55

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Solution

The fourth proportional to 5,128.41, 7,077.21 and 2,770.55 is: 3,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.41 : 7,077.21 = 2,770.55 : x
  2. Step 2: Convert to fraction form
    5,128.41/7,077.21 = 2,770.55/x
  3. Step 3: Cross multiply
    5,128.41x = 7,077.21 × 2,770.55
  4. Step 4: Simplify right side
    5,128.41x = 19,607,732.62
  5. Step 5: Solve for x
    x = 19,607,732.62/5,128.41
  6. Step 6: Final answer
    x = 3,823.36

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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.