Home / 1,935.80-2,905.18-1,318.04

Finding the Fourth Proportional to 1,935.80, 2,905.18 and 1,318.04

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Solution

The fourth proportional to 1,935.80, 2,905.18 and 1,318.04 is: 1,978.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.80 : 2,905.18 = 1,318.04 : x
  2. Step 2: Convert to fraction form
    1,935.80/2,905.18 = 1,318.04/x
  3. Step 3: Cross multiply
    1,935.80x = 2,905.18 × 1,318.04
  4. Step 4: Simplify right side
    1,935.80x = 3,829,143.45
  5. Step 5: Solve for x
    x = 3,829,143.45/1,935.80
  6. Step 6: Final answer
    x = 1,978.07

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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.