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Finding the Fourth Proportional to 9,328.86, 12,860.94 and 6,671.64

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Solution

The fourth proportional to 9,328.86, 12,860.94 and 6,671.64 is: 9,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.86 : 12,860.94 = 6,671.64 : x
  2. Step 2: Convert to fraction form
    9,328.86/12,860.94 = 6,671.64/x
  3. Step 3: Cross multiply
    9,328.86x = 12,860.94 × 6,671.64
  4. Step 4: Simplify right side
    9,328.86x = 85,803,561.74
  5. Step 5: Solve for x
    x = 85,803,561.74/9,328.86
  6. Step 6: Final answer
    x = 9,197.65

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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.