Home / 5,115.39-7,059.32-3,125.52

Finding the Fourth Proportional to 5,115.39, 7,059.32 and 3,125.52

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Solution

The fourth proportional to 5,115.39, 7,059.32 and 3,125.52 is: 4,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.39 : 7,059.32 = 3,125.52 : x
  2. Step 2: Convert to fraction form
    5,115.39/7,059.32 = 3,125.52/x
  3. Step 3: Cross multiply
    5,115.39x = 7,059.32 × 3,125.52
  4. Step 4: Simplify right side
    5,115.39x = 22,064,045.85
  5. Step 5: Solve for x
    x = 22,064,045.85/5,115.39
  6. Step 6: Final answer
    x = 4,313.27

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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.