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Finding the Fourth Proportional to 7,865.34, 11,798.10 and 2,671.62

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Solution

The fourth proportional to 7,865.34, 11,798.10 and 2,671.62 is: 4,007.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.34 : 11,798.10 = 2,671.62 : x
  2. Step 2: Convert to fraction form
    7,865.34/11,798.10 = 2,671.62/x
  3. Step 3: Cross multiply
    7,865.34x = 11,798.10 × 2,671.62
  4. Step 4: Simplify right side
    7,865.34x = 31,520,039.92
  5. Step 5: Solve for x
    x = 31,520,039.92/7,865.34
  6. Step 6: Final answer
    x = 4,007.46

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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.