Home / 5,176.52-7,140.12-3,187.72

Finding the Fourth Proportional to 5,176.52, 7,140.12 and 3,187.72

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Solution

The fourth proportional to 5,176.52, 7,140.12 and 3,187.72 is: 4,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.52 : 7,140.12 = 3,187.72 : x
  2. Step 2: Convert to fraction form
    5,176.52/7,140.12 = 3,187.72/x
  3. Step 3: Cross multiply
    5,176.52x = 7,140.12 × 3,187.72
  4. Step 4: Simplify right side
    5,176.52x = 22,760,703.33
  5. Step 5: Solve for x
    x = 22,760,703.33/5,176.52
  6. Step 6: Final answer
    x = 4,396.91

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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.