Home / 2,639.52-3,960.63-1,178.35

Finding the Fourth Proportional to 2,639.52, 3,960.63 and 1,178.35

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Solution

The fourth proportional to 2,639.52, 3,960.63 and 1,178.35 is: 1,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.52 : 3,960.63 = 1,178.35 : x
  2. Step 2: Convert to fraction form
    2,639.52/3,960.63 = 1,178.35/x
  3. Step 3: Cross multiply
    2,639.52x = 3,960.63 × 1,178.35
  4. Step 4: Simplify right side
    2,639.52x = 4,666,998.46
  5. Step 5: Solve for x
    x = 4,666,998.46/2,639.52
  6. Step 6: Final answer
    x = 1,768.12

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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.