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Finding the Fourth Proportional to 6,671.72, 10,007.47 and 1,991.74

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Solution

The fourth proportional to 6,671.72, 10,007.47 and 1,991.74 is: 2,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.72 : 10,007.47 = 1,991.74 : x
  2. Step 2: Convert to fraction form
    6,671.72/10,007.47 = 1,991.74/x
  3. Step 3: Cross multiply
    6,671.72x = 10,007.47 × 1,991.74
  4. Step 4: Simplify right side
    6,671.72x = 19,932,263.33
  5. Step 5: Solve for x
    x = 19,932,263.33/6,671.72
  6. Step 6: Final answer
    x = 2,987.58

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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.