Home / 3,318.30-4,970.70-2,661.66

Finding the Fourth Proportional to 3,318.30, 4,970.70 and 2,661.66

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Solution

The fourth proportional to 3,318.30, 4,970.70 and 2,661.66 is: 3,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.30 : 4,970.70 = 2,661.66 : x
  2. Step 2: Convert to fraction form
    3,318.30/4,970.70 = 2,661.66/x
  3. Step 3: Cross multiply
    3,318.30x = 4,970.70 × 2,661.66
  4. Step 4: Simplify right side
    3,318.30x = 13,230,313.36
  5. Step 5: Solve for x
    x = 13,230,313.36/3,318.30
  6. Step 6: Final answer
    x = 3,987.08

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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.