Home / 2,126.48-3,188.58-1,188.04

Finding the Fourth Proportional to 2,126.48, 3,188.58 and 1,188.04

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Solution

The fourth proportional to 2,126.48, 3,188.58 and 1,188.04 is: 1,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.48 : 3,188.58 = 1,188.04 : x
  2. Step 2: Convert to fraction form
    2,126.48/3,188.58 = 1,188.04/x
  3. Step 3: Cross multiply
    2,126.48x = 3,188.58 × 1,188.04
  4. Step 4: Simplify right side
    2,126.48x = 3,788,164.77
  5. Step 5: Solve for x
    x = 3,788,164.77/2,126.48
  6. Step 6: Final answer
    x = 1,781.43

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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.