Home / 3,138.16-4,330.44-1,811.62

Finding the Fourth Proportional to 3,138.16, 4,330.44 and 1,811.62

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Solution

The fourth proportional to 3,138.16, 4,330.44 and 1,811.62 is: 2,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.16 : 4,330.44 = 1,811.62 : x
  2. Step 2: Convert to fraction form
    3,138.16/4,330.44 = 1,811.62/x
  3. Step 3: Cross multiply
    3,138.16x = 4,330.44 × 1,811.62
  4. Step 4: Simplify right side
    3,138.16x = 7,845,111.71
  5. Step 5: Solve for x
    x = 7,845,111.71/3,138.16
  6. Step 6: Final answer
    x = 2,499.91

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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.