Home / 4,979.48-6,871.38-2,883.20

Finding the Fourth Proportional to 4,979.48, 6,871.38 and 2,883.20

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Solution

The fourth proportional to 4,979.48, 6,871.38 and 2,883.20 is: 3,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.48 : 6,871.38 = 2,883.20 : x
  2. Step 2: Convert to fraction form
    4,979.48/6,871.38 = 2,883.20/x
  3. Step 3: Cross multiply
    4,979.48x = 6,871.38 × 2,883.20
  4. Step 4: Simplify right side
    4,979.48x = 19,811,562.82
  5. Step 5: Solve for x
    x = 19,811,562.82/4,979.48
  6. Step 6: Final answer
    x = 3,978.64

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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.