Home / 7,817.09-10,787.45-4,280.31

Finding the Fourth Proportional to 7,817.09, 10,787.45 and 4,280.31

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Solution

The fourth proportional to 7,817.09, 10,787.45 and 4,280.31 is: 5,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.09 : 10,787.45 = 4,280.31 : x
  2. Step 2: Convert to fraction form
    7,817.09/10,787.45 = 4,280.31/x
  3. Step 3: Cross multiply
    7,817.09x = 10,787.45 × 4,280.31
  4. Step 4: Simplify right side
    7,817.09x = 46,173,608.71
  5. Step 5: Solve for x
    x = 46,173,608.71/7,817.09
  6. Step 6: Final answer
    x = 5,906.76

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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.