Home / 1,087.90-1,628.20-1,073.32

Finding the Fourth Proportional to 1,087.90, 1,628.20 and 1,073.32

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Solution

The fourth proportional to 1,087.90, 1,628.20 and 1,073.32 is: 1,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.90 : 1,628.20 = 1,073.32 : x
  2. Step 2: Convert to fraction form
    1,087.90/1,628.20 = 1,073.32/x
  3. Step 3: Cross multiply
    1,087.90x = 1,628.20 × 1,073.32
  4. Step 4: Simplify right side
    1,087.90x = 1,747,579.62
  5. Step 5: Solve for x
    x = 1,747,579.62/1,087.90
  6. Step 6: Final answer
    x = 1,606.38

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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.