Home / 2,120.64-3,180.06-1,146.48

Finding the Fourth Proportional to 2,120.64, 3,180.06 and 1,146.48

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Solution

The fourth proportional to 2,120.64, 3,180.06 and 1,146.48 is: 1,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.64 : 3,180.06 = 1,146.48 : x
  2. Step 2: Convert to fraction form
    2,120.64/3,180.06 = 1,146.48/x
  3. Step 3: Cross multiply
    2,120.64x = 3,180.06 × 1,146.48
  4. Step 4: Simplify right side
    2,120.64x = 3,645,875.19
  5. Step 5: Solve for x
    x = 3,645,875.19/2,120.64
  6. Step 6: Final answer
    x = 1,719.23

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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.