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Finding the Fourth Proportional to 6,671.90, 10,009.28 and 1,992.29

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Solution

The fourth proportional to 6,671.90, 10,009.28 and 1,992.29 is: 2,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.90 : 10,009.28 = 1,992.29 : x
  2. Step 2: Convert to fraction form
    6,671.90/10,009.28 = 1,992.29/x
  3. Step 3: Cross multiply
    6,671.90x = 10,009.28 × 1,992.29
  4. Step 4: Simplify right side
    6,671.90x = 19,941,343.39
  5. Step 5: Solve for x
    x = 19,941,343.39/6,671.90
  6. Step 6: Final answer
    x = 2,988.85

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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.