Home / 5,128.22-7,076.84-2,859.59

Finding the Fourth Proportional to 5,128.22, 7,076.84 and 2,859.59

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Solution

The fourth proportional to 5,128.22, 7,076.84 and 2,859.59 is: 3,946.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.22 : 7,076.84 = 2,859.59 : x
  2. Step 2: Convert to fraction form
    5,128.22/7,076.84 = 2,859.59/x
  3. Step 3: Cross multiply
    5,128.22x = 7,076.84 × 2,859.59
  4. Step 4: Simplify right side
    5,128.22x = 20,236,864.29
  5. Step 5: Solve for x
    x = 20,236,864.29/5,128.22
  6. Step 6: Final answer
    x = 3,946.18

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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.