Home / 4,871.12-6,720.55-2,980.73

Finding the Fourth Proportional to 4,871.12, 6,720.55 and 2,980.73

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Solution

The fourth proportional to 4,871.12, 6,720.55 and 2,980.73 is: 4,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.12 : 6,720.55 = 2,980.73 : x
  2. Step 2: Convert to fraction form
    4,871.12/6,720.55 = 2,980.73/x
  3. Step 3: Cross multiply
    4,871.12x = 6,720.55 × 2,980.73
  4. Step 4: Simplify right side
    4,871.12x = 20,032,171.12
  5. Step 5: Solve for x
    x = 20,032,171.12/4,871.12
  6. Step 6: Final answer
    x = 4,112.44

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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.