Home / 4,979.36-6,868.80-3,090.32

Finding the Fourth Proportional to 4,979.36, 6,868.80 and 3,090.32

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Solution

The fourth proportional to 4,979.36, 6,868.80 and 3,090.32 is: 4,262.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.36 : 6,868.80 = 3,090.32 : x
  2. Step 2: Convert to fraction form
    4,979.36/6,868.80 = 3,090.32/x
  3. Step 3: Cross multiply
    4,979.36x = 6,868.80 × 3,090.32
  4. Step 4: Simplify right side
    4,979.36x = 21,226,790.02
  5. Step 5: Solve for x
    x = 21,226,790.02/4,979.36
  6. Step 6: Final answer
    x = 4,262.96

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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.