Home / 7,817.28-10,787.92-4,280.82

Finding the Fourth Proportional to 7,817.28, 10,787.92 and 4,280.82

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Solution

The fourth proportional to 7,817.28, 10,787.92 and 4,280.82 is: 5,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.28 : 10,787.92 = 4,280.82 : x
  2. Step 2: Convert to fraction form
    7,817.28/10,787.92 = 4,280.82/x
  3. Step 3: Cross multiply
    7,817.28x = 10,787.92 × 4,280.82
  4. Step 4: Simplify right side
    7,817.28x = 46,181,143.69
  5. Step 5: Solve for x
    x = 46,181,143.69/7,817.28
  6. Step 6: Final answer
    x = 5,907.57

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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.