Home / 5,379.79-7,423.30-3,021.47

Finding the Fourth Proportional to 5,379.79, 7,423.30 and 3,021.47

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Solution

The fourth proportional to 5,379.79, 7,423.30 and 3,021.47 is: 4,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.79 : 7,423.30 = 3,021.47 : x
  2. Step 2: Convert to fraction form
    5,379.79/7,423.30 = 3,021.47/x
  3. Step 3: Cross multiply
    5,379.79x = 7,423.30 × 3,021.47
  4. Step 4: Simplify right side
    5,379.79x = 22,429,278.25
  5. Step 5: Solve for x
    x = 22,429,278.25/5,379.79
  6. Step 6: Final answer
    x = 4,169.17

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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.