Home / 6,660.41-9,987.35-3,887.78

Finding the Fourth Proportional to 6,660.41, 9,987.35 and 3,887.78

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Solution

The fourth proportional to 6,660.41, 9,987.35 and 3,887.78 is: 5,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.41 : 9,987.35 = 3,887.78 : x
  2. Step 2: Convert to fraction form
    6,660.41/9,987.35 = 3,887.78/x
  3. Step 3: Cross multiply
    6,660.41x = 9,987.35 × 3,887.78
  4. Step 4: Simplify right side
    6,660.41x = 38,828,550.21
  5. Step 5: Solve for x
    x = 38,828,550.21/6,660.41
  6. Step 6: Final answer
    x = 5,829.76

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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.