Home / 1,536.44-2,118.52-1,221.08

Finding the Fourth Proportional to 1,536.44, 2,118.52 and 1,221.08

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Solution

The fourth proportional to 1,536.44, 2,118.52 and 1,221.08 is: 1,683.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.44 : 2,118.52 = 1,221.08 : x
  2. Step 2: Convert to fraction form
    1,536.44/2,118.52 = 1,221.08/x
  3. Step 3: Cross multiply
    1,536.44x = 2,118.52 × 1,221.08
  4. Step 4: Simplify right side
    1,536.44x = 2,586,882.40
  5. Step 5: Solve for x
    x = 2,586,882.40/1,536.44
  6. Step 6: Final answer
    x = 1,683.69

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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.