Home / 5,780.13-7,976.57-3,685.47

Finding the Fourth Proportional to 5,780.13, 7,976.57 and 3,685.47

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Solution

The fourth proportional to 5,780.13, 7,976.57 and 3,685.47 is: 5,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.13 : 7,976.57 = 3,685.47 : x
  2. Step 2: Convert to fraction form
    5,780.13/7,976.57 = 3,685.47/x
  3. Step 3: Cross multiply
    5,780.13x = 7,976.57 × 3,685.47
  4. Step 4: Simplify right side
    5,780.13x = 29,397,409.44
  5. Step 5: Solve for x
    x = 29,397,409.44/5,780.13
  6. Step 6: Final answer
    x = 5,085.94

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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.