Home / 3,783.61-5,675.45-1,318.43

Finding the Fourth Proportional to 3,783.61, 5,675.45 and 1,318.43

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Solution

The fourth proportional to 3,783.61, 5,675.45 and 1,318.43 is: 1,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.61 : 5,675.45 = 1,318.43 : x
  2. Step 2: Convert to fraction form
    3,783.61/5,675.45 = 1,318.43/x
  3. Step 3: Cross multiply
    3,783.61x = 5,675.45 × 1,318.43
  4. Step 4: Simplify right side
    3,783.61x = 7,482,666.63
  5. Step 5: Solve for x
    x = 7,482,666.63/3,783.61
  6. Step 6: Final answer
    x = 1,977.65

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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.