Home / 2,980.58-4,473.09-1,108.20

Finding the Fourth Proportional to 2,980.58, 4,473.09 and 1,108.20

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Solution

The fourth proportional to 2,980.58, 4,473.09 and 1,108.20 is: 1,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.58 : 4,473.09 = 1,108.20 : x
  2. Step 2: Convert to fraction form
    2,980.58/4,473.09 = 1,108.20/x
  3. Step 3: Cross multiply
    2,980.58x = 4,473.09 × 1,108.20
  4. Step 4: Simplify right side
    2,980.58x = 4,957,078.34
  5. Step 5: Solve for x
    x = 4,957,078.34/2,980.58
  6. Step 6: Final answer
    x = 1,663.13

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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.