Home / 1,147.25-1,720.91-1,087.26

Finding the Fourth Proportional to 1,147.25, 1,720.91 and 1,087.26

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Solution

The fourth proportional to 1,147.25, 1,720.91 and 1,087.26 is: 1,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.25 : 1,720.91 = 1,087.26 : x
  2. Step 2: Convert to fraction form
    1,147.25/1,720.91 = 1,087.26/x
  3. Step 3: Cross multiply
    1,147.25x = 1,720.91 × 1,087.26
  4. Step 4: Simplify right side
    1,147.25x = 1,871,071.17
  5. Step 5: Solve for x
    x = 1,871,071.17/1,147.25
  6. Step 6: Final answer
    x = 1,630.93

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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.