Home / 3,177.08-4,763.88-985.20

Finding the Fourth Proportional to 3,177.08, 4,763.88 and 985.20

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Solution

The fourth proportional to 3,177.08, 4,763.88 and 985.20 is: 1,477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.08 : 4,763.88 = 985.20 : x
  2. Step 2: Convert to fraction form
    3,177.08/4,763.88 = 985.20/x
  3. Step 3: Cross multiply
    3,177.08x = 4,763.88 × 985.20
  4. Step 4: Simplify right side
    3,177.08x = 4,693,374.58
  5. Step 5: Solve for x
    x = 4,693,374.58/3,177.08
  6. Step 6: Final answer
    x = 1,477.26

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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.