Home / 7,815.90-10,786.02-4,279.26

Finding the Fourth Proportional to 7,815.90, 10,786.02 and 4,279.26

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Solution

The fourth proportional to 7,815.90, 10,786.02 and 4,279.26 is: 5,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.90 : 10,786.02 = 4,279.26 : x
  2. Step 2: Convert to fraction form
    7,815.90/10,786.02 = 4,279.26/x
  3. Step 3: Cross multiply
    7,815.90x = 10,786.02 × 4,279.26
  4. Step 4: Simplify right side
    7,815.90x = 46,156,183.95
  5. Step 5: Solve for x
    x = 46,156,183.95/7,815.90
  6. Step 6: Final answer
    x = 5,905.42

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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.