Home / 2,909.40-4,356.81-2,321.88

Finding the Fourth Proportional to 2,909.40, 4,356.81 and 2,321.88

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Solution

The fourth proportional to 2,909.40, 4,356.81 and 2,321.88 is: 3,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.40 : 4,356.81 = 2,321.88 : x
  2. Step 2: Convert to fraction form
    2,909.40/4,356.81 = 2,321.88/x
  3. Step 3: Cross multiply
    2,909.40x = 4,356.81 × 2,321.88
  4. Step 4: Simplify right side
    2,909.40x = 10,115,990.00
  5. Step 5: Solve for x
    x = 10,115,990.00/2,909.40
  6. Step 6: Final answer
    x = 3,477.00

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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.