Home / 1,087.20-1,631.04-625.26

Finding the Fourth Proportional to 1,087.20, 1,631.04 and 625.26

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Solution

The fourth proportional to 1,087.20, 1,631.04 and 625.26 is: 938.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.20 : 1,631.04 = 625.26 : x
  2. Step 2: Convert to fraction form
    1,087.20/1,631.04 = 625.26/x
  3. Step 3: Cross multiply
    1,087.20x = 1,631.04 × 625.26
  4. Step 4: Simplify right side
    1,087.20x = 1,019,824.07
  5. Step 5: Solve for x
    x = 1,019,824.07/1,087.20
  6. Step 6: Final answer
    x = 938.03

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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.