Home / 1,636.12-2,253.54-1,322.20

Finding the Fourth Proportional to 1,636.12, 2,253.54 and 1,322.20

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Solution

The fourth proportional to 1,636.12, 2,253.54 and 1,322.20 is: 1,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.12 : 2,253.54 = 1,322.20 : x
  2. Step 2: Convert to fraction form
    1,636.12/2,253.54 = 1,322.20/x
  3. Step 3: Cross multiply
    1,636.12x = 2,253.54 × 1,322.20
  4. Step 4: Simplify right side
    1,636.12x = 2,979,630.59
  5. Step 5: Solve for x
    x = 2,979,630.59/1,636.12
  6. Step 6: Final answer
    x = 1,821.16

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1.5x scale

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.