Home / 3,516.04-5,258.56-3,128.78

Finding the Fourth Proportional to 3,516.04, 5,258.56 and 3,128.78

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Solution

The fourth proportional to 3,516.04, 5,258.56 and 3,128.78 is: 4,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,516.04 : 5,258.56 = 3,128.78 : x
  2. Step 2: Convert to fraction form
    3,516.04/5,258.56 = 3,128.78/x
  3. Step 3: Cross multiply
    3,516.04x = 5,258.56 × 3,128.78
  4. Step 4: Simplify right side
    3,516.04x = 16,452,877.36
  5. Step 5: Solve for x
    x = 16,452,877.36/3,516.04
  6. Step 6: Final answer
    x = 4,679.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.