Home / 7,127.12-10,690.43-2,196.65

Finding the Fourth Proportional to 7,127.12, 10,690.43 and 2,196.65

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Solution

The fourth proportional to 7,127.12, 10,690.43 and 2,196.65 is: 3,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.12 : 10,690.43 = 2,196.65 : x
  2. Step 2: Convert to fraction form
    7,127.12/10,690.43 = 2,196.65/x
  3. Step 3: Cross multiply
    7,127.12x = 10,690.43 × 2,196.65
  4. Step 4: Simplify right side
    7,127.12x = 23,483,148.80
  5. Step 5: Solve for x
    x = 23,483,148.80/7,127.12
  6. Step 6: Final answer
    x = 3,294.90

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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.