Home / 5,219.09-7,202.18-2,980.91

Finding the Fourth Proportional to 5,219.09, 7,202.18 and 2,980.91

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Solution

The fourth proportional to 5,219.09, 7,202.18 and 2,980.91 is: 4,113.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.09 : 7,202.18 = 2,980.91 : x
  2. Step 2: Convert to fraction form
    5,219.09/7,202.18 = 2,980.91/x
  3. Step 3: Cross multiply
    5,219.09x = 7,202.18 × 2,980.91
  4. Step 4: Simplify right side
    5,219.09x = 21,468,999.47
  5. Step 5: Solve for x
    x = 21,468,999.47/5,219.09
  6. Step 6: Final answer
    x = 4,113.56

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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.