Home / 1,646.12-2,272.19-1,310.64

Finding the Fourth Proportional to 1,646.12, 2,272.19 and 1,310.64

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Solution

The fourth proportional to 1,646.12, 2,272.19 and 1,310.64 is: 1,809.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.12 : 2,272.19 = 1,310.64 : x
  2. Step 2: Convert to fraction form
    1,646.12/2,272.19 = 1,310.64/x
  3. Step 3: Cross multiply
    1,646.12x = 2,272.19 × 1,310.64
  4. Step 4: Simplify right side
    1,646.12x = 2,978,023.10
  5. Step 5: Solve for x
    x = 2,978,023.10/1,646.12
  6. Step 6: Final answer
    x = 1,809.12

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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.