Home / 2,147.38-3,214.05-1,326.32

Finding the Fourth Proportional to 2,147.38, 3,214.05 and 1,326.32

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Solution

The fourth proportional to 2,147.38, 3,214.05 and 1,326.32 is: 1,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.38 : 3,214.05 = 1,326.32 : x
  2. Step 2: Convert to fraction form
    2,147.38/3,214.05 = 1,326.32/x
  3. Step 3: Cross multiply
    2,147.38x = 3,214.05 × 1,326.32
  4. Step 4: Simplify right side
    2,147.38x = 4,262,858.80
  5. Step 5: Solve for x
    x = 4,262,858.80/2,147.38
  6. Step 6: Final answer
    x = 1,985.14

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1.5x scale

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.