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Finding the Fourth Proportional to 8,560.37, 12,775.75 and 7,854.41

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Solution

The fourth proportional to 8,560.37, 12,775.75 and 7,854.41 is: 11,722.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.37 : 12,775.75 = 7,854.41 : x
  2. Step 2: Convert to fraction form
    8,560.37/12,775.75 = 7,854.41/x
  3. Step 3: Cross multiply
    8,560.37x = 12,775.75 × 7,854.41
  4. Step 4: Simplify right side
    8,560.37x = 100,345,990.86
  5. Step 5: Solve for x
    x = 100,345,990.86/8,560.37
  6. Step 6: Final answer
    x = 11,722.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.