Home / 3,138.66-4,332.06-1,812.60

Finding the Fourth Proportional to 3,138.66, 4,332.06 and 1,812.60

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Solution

The fourth proportional to 3,138.66, 4,332.06 and 1,812.60 is: 2,501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.66 : 4,332.06 = 1,812.60 : x
  2. Step 2: Convert to fraction form
    3,138.66/4,332.06 = 1,812.60/x
  3. Step 3: Cross multiply
    3,138.66x = 4,332.06 × 1,812.60
  4. Step 4: Simplify right side
    3,138.66x = 7,852,291.96
  5. Step 5: Solve for x
    x = 7,852,291.96/3,138.66
  6. Step 6: Final answer
    x = 2,501.80

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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.