Home / 8,557.72-12,817.90-5,260.82

Finding the Fourth Proportional to 8,557.72, 12,817.90 and 5,260.82

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Solution

The fourth proportional to 8,557.72, 12,817.90 and 5,260.82 is: 7,879.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.72 : 12,817.90 = 5,260.82 : x
  2. Step 2: Convert to fraction form
    8,557.72/12,817.90 = 5,260.82/x
  3. Step 3: Cross multiply
    8,557.72x = 12,817.90 × 5,260.82
  4. Step 4: Simplify right side
    8,557.72x = 67,432,664.68
  5. Step 5: Solve for x
    x = 67,432,664.68/8,557.72
  6. Step 6: Final answer
    x = 7,879.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.