Home / 5,128.12-7,076.81-2,770.26

Finding the Fourth Proportional to 5,128.12, 7,076.81 and 2,770.26

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Solution

The fourth proportional to 5,128.12, 7,076.81 and 2,770.26 is: 3,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.12 : 7,076.81 = 2,770.26 : x
  2. Step 2: Convert to fraction form
    5,128.12/7,076.81 = 2,770.26/x
  3. Step 3: Cross multiply
    5,128.12x = 7,076.81 × 2,770.26
  4. Step 4: Simplify right side
    5,128.12x = 19,604,603.67
  5. Step 5: Solve for x
    x = 19,604,603.67/5,128.12
  6. Step 6: Final answer
    x = 3,822.96

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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.