Home / 4,128.78-5,697.66-2,265.78

Finding the Fourth Proportional to 4,128.78, 5,697.66 and 2,265.78

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Solution

The fourth proportional to 4,128.78, 5,697.66 and 2,265.78 is: 3,126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.78 : 5,697.66 = 2,265.78 : x
  2. Step 2: Convert to fraction form
    4,128.78/5,697.66 = 2,265.78/x
  3. Step 3: Cross multiply
    4,128.78x = 5,697.66 × 2,265.78
  4. Step 4: Simplify right side
    4,128.78x = 12,909,644.07
  5. Step 5: Solve for x
    x = 12,909,644.07/4,128.78
  6. Step 6: Final answer
    x = 3,126.75

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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.