Home / 6,621.49-9,917.65-4,419.91

Finding the Fourth Proportional to 6,621.49, 9,917.65 and 4,419.91

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Solution

The fourth proportional to 6,621.49, 9,917.65 and 4,419.91 is: 6,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.49 : 9,917.65 = 4,419.91 : x
  2. Step 2: Convert to fraction form
    6,621.49/9,917.65 = 4,419.91/x
  3. Step 3: Cross multiply
    6,621.49x = 9,917.65 × 4,419.91
  4. Step 4: Simplify right side
    6,621.49x = 43,835,120.41
  5. Step 5: Solve for x
    x = 43,835,120.41/6,621.49
  6. Step 6: Final answer
    x = 6,620.13

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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.