Home / 4,979.40-7,457.10-2,665.80

Finding the Fourth Proportional to 4,979.40, 7,457.10 and 2,665.80

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Solution

The fourth proportional to 4,979.40, 7,457.10 and 2,665.80 is: 3,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.40 : 7,457.10 = 2,665.80 : x
  2. Step 2: Convert to fraction form
    4,979.40/7,457.10 = 2,665.80/x
  3. Step 3: Cross multiply
    4,979.40x = 7,457.10 × 2,665.80
  4. Step 4: Simplify right side
    4,979.40x = 19,879,137.18
  5. Step 5: Solve for x
    x = 19,879,137.18/4,979.40
  6. Step 6: Final answer
    x = 3,992.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.