Home / 5,128.08-7,073.53-3,135.18

Finding the Fourth Proportional to 5,128.08, 7,073.53 and 3,135.18

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Solution

The fourth proportional to 5,128.08, 7,073.53 and 3,135.18 is: 4,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.08 : 7,073.53 = 3,135.18 : x
  2. Step 2: Convert to fraction form
    5,128.08/7,073.53 = 3,135.18/x
  3. Step 3: Cross multiply
    5,128.08x = 7,073.53 × 3,135.18
  4. Step 4: Simplify right side
    5,128.08x = 22,176,789.79
  5. Step 5: Solve for x
    x = 22,176,789.79/5,128.08
  6. Step 6: Final answer
    x = 4,324.58

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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.