Home / 1,147.26-1,720.93-972.30

Finding the Fourth Proportional to 1,147.26, 1,720.93 and 972.30

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Solution

The fourth proportional to 1,147.26, 1,720.93 and 972.30 is: 1,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.26 : 1,720.93 = 972.30 : x
  2. Step 2: Convert to fraction form
    1,147.26/1,720.93 = 972.30/x
  3. Step 3: Cross multiply
    1,147.26x = 1,720.93 × 972.30
  4. Step 4: Simplify right side
    1,147.26x = 1,673,260.24
  5. Step 5: Solve for x
    x = 1,673,260.24/1,147.26
  6. Step 6: Final answer
    x = 1,458.48

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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.