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Finding the Fourth Proportional to 8,646.76, 12,887.88 and 8,154.64

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Solution

The fourth proportional to 8,646.76, 12,887.88 and 8,154.64 is: 12,154.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.76 : 12,887.88 = 8,154.64 : x
  2. Step 2: Convert to fraction form
    8,646.76/12,887.88 = 8,154.64/x
  3. Step 3: Cross multiply
    8,646.76x = 12,887.88 × 8,154.64
  4. Step 4: Simplify right side
    8,646.76x = 105,096,021.76
  5. Step 5: Solve for x
    x = 105,096,021.76/8,646.76
  6. Step 6: Final answer
    x = 12,154.38

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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.