Home / 5,160.96-7,120.90-3,036.58

Finding the Fourth Proportional to 5,160.96, 7,120.90 and 3,036.58

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Solution

The fourth proportional to 5,160.96, 7,120.90 and 3,036.58 is: 4,189.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.96 : 7,120.90 = 3,036.58 : x
  2. Step 2: Convert to fraction form
    5,160.96/7,120.90 = 3,036.58/x
  3. Step 3: Cross multiply
    5,160.96x = 7,120.90 × 3,036.58
  4. Step 4: Simplify right side
    5,160.96x = 21,623,195.22
  5. Step 5: Solve for x
    x = 21,623,195.22/5,160.96
  6. Step 6: Final answer
    x = 4,189.76

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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.