Home / 2,480.40-3,723.30-1,386.90

Finding the Fourth Proportional to 2,480.40, 3,723.30 and 1,386.90

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Solution

The fourth proportional to 2,480.40, 3,723.30 and 1,386.90 is: 2,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.40 : 3,723.30 = 1,386.90 : x
  2. Step 2: Convert to fraction form
    2,480.40/3,723.30 = 1,386.90/x
  3. Step 3: Cross multiply
    2,480.40x = 3,723.30 × 1,386.90
  4. Step 4: Simplify right side
    2,480.40x = 5,163,844.77
  5. Step 5: Solve for x
    x = 5,163,844.77/2,480.40
  6. Step 6: Final answer
    x = 2,081.86

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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.