Home / 7,817.22-10,787.40-4,279.68

Finding the Fourth Proportional to 7,817.22, 10,787.40 and 4,279.68

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Solution

The fourth proportional to 7,817.22, 10,787.40 and 4,279.68 is: 5,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.22 : 10,787.40 = 4,279.68 : x
  2. Step 2: Convert to fraction form
    7,817.22/10,787.40 = 4,279.68/x
  3. Step 3: Cross multiply
    7,817.22x = 10,787.40 × 4,279.68
  4. Step 4: Simplify right side
    7,817.22x = 46,166,620.03
  5. Step 5: Solve for x
    x = 46,166,620.03/7,817.22
  6. Step 6: Final answer
    x = 5,905.76

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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.