Home / 6,671.96-10,008.45-1,991.60

Finding the Fourth Proportional to 6,671.96, 10,008.45 and 1,991.60

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Solution

The fourth proportional to 6,671.96, 10,008.45 and 1,991.60 is: 2,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.96 : 10,008.45 = 1,991.60 : x
  2. Step 2: Convert to fraction form
    6,671.96/10,008.45 = 1,991.60/x
  3. Step 3: Cross multiply
    6,671.96x = 10,008.45 × 1,991.60
  4. Step 4: Simplify right side
    6,671.96x = 19,932,829.02
  5. Step 5: Solve for x
    x = 19,932,829.02/6,671.96
  6. Step 6: Final answer
    x = 2,987.55

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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.