Home / 3,582-5,373.77-1,390.73

Finding the Fourth Proportional to 3,582, 5,373.77 and 1,390.73

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Solution

The fourth proportional to 3,582, 5,373.77 and 1,390.73 is: 2,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,582 : 5,373.77 = 1,390.73 : x
  2. Step 2: Convert to fraction form
    3,582/5,373.77 = 1,390.73/x
  3. Step 3: Cross multiply
    3,582x = 5,373.77 × 1,390.73
  4. Step 4: Simplify right side
    3,582x = 7,473,429.33
  5. Step 5: Solve for x
    x = 7,473,429.33/3,582
  6. Step 6: Final answer
    x = 2,086.38

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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.