Home / 5,218.28-7,200.74-2,980.14

Finding the Fourth Proportional to 5,218.28, 7,200.74 and 2,980.14

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Solution

The fourth proportional to 5,218.28, 7,200.74 and 2,980.14 is: 4,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.28 : 7,200.74 = 2,980.14 : x
  2. Step 2: Convert to fraction form
    5,218.28/7,200.74 = 2,980.14/x
  3. Step 3: Cross multiply
    5,218.28x = 7,200.74 × 2,980.14
  4. Step 4: Simplify right side
    5,218.28x = 21,459,213.30
  5. Step 5: Solve for x
    x = 21,459,213.30/5,218.28
  6. Step 6: Final answer
    x = 4,112.32

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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.