Home / 4,428.12-6,643.82-2,118.04

Finding the Fourth Proportional to 4,428.12, 6,643.82 and 2,118.04

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Solution

The fourth proportional to 4,428.12, 6,643.82 and 2,118.04 is: 3,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.12 : 6,643.82 = 2,118.04 : x
  2. Step 2: Convert to fraction form
    4,428.12/6,643.82 = 2,118.04/x
  3. Step 3: Cross multiply
    4,428.12x = 6,643.82 × 2,118.04
  4. Step 4: Simplify right side
    4,428.12x = 14,071,876.51
  5. Step 5: Solve for x
    x = 14,071,876.51/4,428.12
  6. Step 6: Final answer
    x = 3,177.84

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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.