Home / 2,118.17-3,178.28-1,296.00

Finding the Fourth Proportional to 2,118.17, 3,178.28 and 1,296.00

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Solution

The fourth proportional to 2,118.17, 3,178.28 and 1,296.00 is: 1,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.17 : 3,178.28 = 1,296.00 : x
  2. Step 2: Convert to fraction form
    2,118.17/3,178.28 = 1,296.00/x
  3. Step 3: Cross multiply
    2,118.17x = 3,178.28 × 1,296.00
  4. Step 4: Simplify right side
    2,118.17x = 4,119,034.99
  5. Step 5: Solve for x
    x = 4,119,034.99/2,118.17
  6. Step 6: Final answer
    x = 1,944.62

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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.