Home / 2,148.51-3,221.15-914.88

Finding the Fourth Proportional to 2,148.51, 3,221.15 and 914.88

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Solution

The fourth proportional to 2,148.51, 3,221.15 and 914.88 is: 1,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.51 : 3,221.15 = 914.88 : x
  2. Step 2: Convert to fraction form
    2,148.51/3,221.15 = 914.88/x
  3. Step 3: Cross multiply
    2,148.51x = 3,221.15 × 914.88
  4. Step 4: Simplify right side
    2,148.51x = 2,946,961.14
  5. Step 5: Solve for x
    x = 2,946,961.14/2,148.51
  6. Step 6: Final answer
    x = 1,371.63

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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.