Home / 7,815.98-10,786.08-4,279.22

Finding the Fourth Proportional to 7,815.98, 10,786.08 and 4,279.22

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Solution

The fourth proportional to 7,815.98, 10,786.08 and 4,279.22 is: 5,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.98 : 10,786.08 = 4,279.22 : x
  2. Step 2: Convert to fraction form
    7,815.98/10,786.08 = 4,279.22/x
  3. Step 3: Cross multiply
    7,815.98x = 10,786.08 × 4,279.22
  4. Step 4: Simplify right side
    7,815.98x = 46,156,009.26
  5. Step 5: Solve for x
    x = 46,156,009.26/7,815.98
  6. Step 6: Final answer
    x = 5,905.34

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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.