Home / 4,089.40-5,643.32-2,226.40

Finding the Fourth Proportional to 4,089.40, 5,643.32 and 2,226.40

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Solution

The fourth proportional to 4,089.40, 5,643.32 and 2,226.40 is: 3,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.40 : 5,643.32 = 2,226.40 : x
  2. Step 2: Convert to fraction form
    4,089.40/5,643.32 = 2,226.40/x
  3. Step 3: Cross multiply
    4,089.40x = 5,643.32 × 2,226.40
  4. Step 4: Simplify right side
    4,089.40x = 12,564,287.65
  5. Step 5: Solve for x
    x = 12,564,287.65/4,089.40
  6. Step 6: Final answer
    x = 3,072.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.