Home / 2,104.40-3,156.64-1,238.08

Finding the Fourth Proportional to 2,104.40, 3,156.64 and 1,238.08

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Solution

The fourth proportional to 2,104.40, 3,156.64 and 1,238.08 is: 1,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.40 : 3,156.64 = 1,238.08 : x
  2. Step 2: Convert to fraction form
    2,104.40/3,156.64 = 1,238.08/x
  3. Step 3: Cross multiply
    2,104.40x = 3,156.64 × 1,238.08
  4. Step 4: Simplify right side
    2,104.40x = 3,908,172.85
  5. Step 5: Solve for x
    x = 3,908,172.85/2,104.40
  6. Step 6: Final answer
    x = 1,857.14

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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.