Home / 5,218.16-7,200.36-2,979.89

Finding the Fourth Proportional to 5,218.16, 7,200.36 and 2,979.89

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Solution

The fourth proportional to 5,218.16, 7,200.36 and 2,979.89 is: 4,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.16 : 7,200.36 = 2,979.89 : x
  2. Step 2: Convert to fraction form
    5,218.16/7,200.36 = 2,979.89/x
  3. Step 3: Cross multiply
    5,218.16x = 7,200.36 × 2,979.89
  4. Step 4: Simplify right side
    5,218.16x = 21,456,244.76
  5. Step 5: Solve for x
    x = 21,456,244.76/5,218.16
  6. Step 6: Final answer
    x = 4,111.85

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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.