Home / 2,166.64-3,243.28-1,384.06

Finding the Fourth Proportional to 2,166.64, 3,243.28 and 1,384.06

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Solution

The fourth proportional to 2,166.64, 3,243.28 and 1,384.06 is: 2,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.64 : 3,243.28 = 1,384.06 : x
  2. Step 2: Convert to fraction form
    2,166.64/3,243.28 = 1,384.06/x
  3. Step 3: Cross multiply
    2,166.64x = 3,243.28 × 1,384.06
  4. Step 4: Simplify right side
    2,166.64x = 4,488,894.12
  5. Step 5: Solve for x
    x = 4,488,894.12/2,166.64
  6. Step 6: Final answer
    x = 2,071.82

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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.