Home / 5,180.58-7,148.39-2,911.47

Finding the Fourth Proportional to 5,180.58, 7,148.39 and 2,911.47

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Solution

The fourth proportional to 5,180.58, 7,148.39 and 2,911.47 is: 4,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.58 : 7,148.39 = 2,911.47 : x
  2. Step 2: Convert to fraction form
    5,180.58/7,148.39 = 2,911.47/x
  3. Step 3: Cross multiply
    5,180.58x = 7,148.39 × 2,911.47
  4. Step 4: Simplify right side
    5,180.58x = 20,812,323.03
  5. Step 5: Solve for x
    x = 20,812,323.03/5,180.58
  6. Step 6: Final answer
    x = 4,017.37

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1.5x scale

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.