Home / 3,610.40-4,980.29-2,118.02

Finding the Fourth Proportional to 3,610.40, 4,980.29 and 2,118.02

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Solution

The fourth proportional to 3,610.40, 4,980.29 and 2,118.02 is: 2,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.40 : 4,980.29 = 2,118.02 : x
  2. Step 2: Convert to fraction form
    3,610.40/4,980.29 = 2,118.02/x
  3. Step 3: Cross multiply
    3,610.40x = 4,980.29 × 2,118.02
  4. Step 4: Simplify right side
    3,610.40x = 10,548,318.33
  5. Step 5: Solve for x
    x = 10,548,318.33/3,610.40
  6. Step 6: Final answer
    x = 2,921.65

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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.