Home / 7,320-10,971.88-3,614.38

Finding the Fourth Proportional to 7,320, 10,971.88 and 3,614.38

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Solution

The fourth proportional to 7,320, 10,971.88 and 3,614.38 is: 5,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320 : 10,971.88 = 3,614.38 : x
  2. Step 2: Convert to fraction form
    7,320/10,971.88 = 3,614.38/x
  3. Step 3: Cross multiply
    7,320x = 10,971.88 × 3,614.38
  4. Step 4: Simplify right side
    7,320x = 39,656,543.63
  5. Step 5: Solve for x
    x = 39,656,543.63/7,320
  6. Step 6: Final answer
    x = 5,417.56

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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.