Home / 1,087.26-1,631.36-510.13

Finding the Fourth Proportional to 1,087.26, 1,631.36 and 510.13

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Solution

The fourth proportional to 1,087.26, 1,631.36 and 510.13 is: 765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.26 : 1,631.36 = 510.13 : x
  2. Step 2: Convert to fraction form
    1,087.26/1,631.36 = 510.13/x
  3. Step 3: Cross multiply
    1,087.26x = 1,631.36 × 510.13
  4. Step 4: Simplify right side
    1,087.26x = 832,205.68
  5. Step 5: Solve for x
    x = 832,205.68/1,087.26
  6. Step 6: Final answer
    x = 765.42

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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.