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Finding the Fourth Proportional to 2,188.81, 3,020.44 and 1,244.47

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Solution

The fourth proportional to 2,188.81, 3,020.44 and 1,244.47 is: 1,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.81 : 3,020.44 = 1,244.47 : x
  2. Step 2: Convert to fraction form
    2,188.81/3,020.44 = 1,244.47/x
  3. Step 3: Cross multiply
    2,188.81x = 3,020.44 × 1,244.47
  4. Step 4: Simplify right side
    2,188.81x = 3,758,852.96
  5. Step 5: Solve for x
    x = 3,758,852.96/2,188.81
  6. Step 6: Final answer
    x = 1,717.30

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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.