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Finding the Fourth Proportional to 12,671.10, 19,006.65 and 3,908.70

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Solution

The fourth proportional to 12,671.10, 19,006.65 and 3,908.70 is: 5,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.10 : 19,006.65 = 3,908.70 : x
  2. Step 2: Convert to fraction form
    12,671.10/19,006.65 = 3,908.70/x
  3. Step 3: Cross multiply
    12,671.10x = 19,006.65 × 3,908.70
  4. Step 4: Simplify right side
    12,671.10x = 74,291,292.86
  5. Step 5: Solve for x
    x = 74,291,292.86/12,671.10
  6. Step 6: Final answer
    x = 5,863.05

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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.