Home / 5,128.04-7,076.68-2,770.18

Finding the Fourth Proportional to 5,128.04, 7,076.68 and 2,770.18

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Solution

The fourth proportional to 5,128.04, 7,076.68 and 2,770.18 is: 3,822.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.04 : 7,076.68 = 2,770.18 : x
  2. Step 2: Convert to fraction form
    5,128.04/7,076.68 = 2,770.18/x
  3. Step 3: Cross multiply
    5,128.04x = 7,076.68 × 2,770.18
  4. Step 4: Simplify right side
    5,128.04x = 19,603,652.79
  5. Step 5: Solve for x
    x = 19,603,652.79/5,128.04
  6. Step 6: Final answer
    x = 3,822.83

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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.