Home / 5,128.90-7,076.40-3,339.01

Finding the Fourth Proportional to 5,128.90, 7,076.40 and 3,339.01

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Solution

The fourth proportional to 5,128.90, 7,076.40 and 3,339.01 is: 4,606.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.90 : 7,076.40 = 3,339.01 : x
  2. Step 2: Convert to fraction form
    5,128.90/7,076.40 = 3,339.01/x
  3. Step 3: Cross multiply
    5,128.90x = 7,076.40 × 3,339.01
  4. Step 4: Simplify right side
    5,128.90x = 23,628,170.36
  5. Step 5: Solve for x
    x = 23,628,170.36/5,128.90
  6. Step 6: Final answer
    x = 4,606.87

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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.