Home / 1,147.26-1,582.76-727.62

Finding the Fourth Proportional to 1,147.26, 1,582.76 and 727.62

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Solution

The fourth proportional to 1,147.26, 1,582.76 and 727.62 is: 1,003.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.26 : 1,582.76 = 727.62 : x
  2. Step 2: Convert to fraction form
    1,147.26/1,582.76 = 727.62/x
  3. Step 3: Cross multiply
    1,147.26x = 1,582.76 × 727.62
  4. Step 4: Simplify right side
    1,147.26x = 1,151,647.83
  5. Step 5: Solve for x
    x = 1,151,647.83/1,147.26
  6. Step 6: Final answer
    x = 1,003.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.