Home / 7,817.10-10,787.58-4,280.28

Finding the Fourth Proportional to 7,817.10, 10,787.58 and 4,280.28

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Solution

The fourth proportional to 7,817.10, 10,787.58 and 4,280.28 is: 5,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.10 : 10,787.58 = 4,280.28 : x
  2. Step 2: Convert to fraction form
    7,817.10/10,787.58 = 4,280.28/x
  3. Step 3: Cross multiply
    7,817.10x = 10,787.58 × 4,280.28
  4. Step 4: Simplify right side
    7,817.10x = 46,173,862.92
  5. Step 5: Solve for x
    x = 46,173,862.92/7,817.10
  6. Step 6: Final answer
    x = 5,906.78

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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.