Home / 1,087.30-1,623-1,039.96

Finding the Fourth Proportional to 1,087.30, 1,623 and 1,039.96

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Solution

The fourth proportional to 1,087.30, 1,623 and 1,039.96 is: 1,552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.30 : 1,623 = 1,039.96 : x
  2. Step 2: Convert to fraction form
    1,087.30/1,623 = 1,039.96/x
  3. Step 3: Cross multiply
    1,087.30x = 1,623 × 1,039.96
  4. Step 4: Simplify right side
    1,087.30x = 1,687,855.08
  5. Step 5: Solve for x
    x = 1,687,855.08/1,087.30
  6. Step 6: Final answer
    x = 1,552.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.