Home / 2,188.54-3,021.30-1,690.06

Finding the Fourth Proportional to 2,188.54, 3,021.30 and 1,690.06

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Solution

The fourth proportional to 2,188.54, 3,021.30 and 1,690.06 is: 2,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.54 : 3,021.30 = 1,690.06 : x
  2. Step 2: Convert to fraction form
    2,188.54/3,021.30 = 1,690.06/x
  3. Step 3: Cross multiply
    2,188.54x = 3,021.30 × 1,690.06
  4. Step 4: Simplify right side
    2,188.54x = 5,106,178.28
  5. Step 5: Solve for x
    x = 5,106,178.28/2,188.54
  6. Step 6: Final answer
    x = 2,333.14

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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.