Home / 5,130.74-7,081.43-3,006.42

Finding the Fourth Proportional to 5,130.74, 7,081.43 and 3,006.42

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Solution

The fourth proportional to 5,130.74, 7,081.43 and 3,006.42 is: 4,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.74 : 7,081.43 = 3,006.42 : x
  2. Step 2: Convert to fraction form
    5,130.74/7,081.43 = 3,006.42/x
  3. Step 3: Cross multiply
    5,130.74x = 7,081.43 × 3,006.42
  4. Step 4: Simplify right side
    5,130.74x = 21,289,711.19
  5. Step 5: Solve for x
    x = 21,289,711.19/5,130.74
  6. Step 6: Final answer
    x = 4,149.44

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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.