Home / 5,208.12-7,187.36-3,218.76

Finding the Fourth Proportional to 5,208.12, 7,187.36 and 3,218.76

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Solution

The fourth proportional to 5,208.12, 7,187.36 and 3,218.76 is: 4,441.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.12 : 7,187.36 = 3,218.76 : x
  2. Step 2: Convert to fraction form
    5,208.12/7,187.36 = 3,218.76/x
  3. Step 3: Cross multiply
    5,208.12x = 7,187.36 × 3,218.76
  4. Step 4: Simplify right side
    5,208.12x = 23,134,386.87
  5. Step 5: Solve for x
    x = 23,134,386.87/5,208.12
  6. Step 6: Final answer
    x = 4,441.98

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Half scale
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Double scale
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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.