Home / 5,210.19-7,189.79-2,851.88

Finding the Fourth Proportional to 5,210.19, 7,189.79 and 2,851.88

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Solution

The fourth proportional to 5,210.19, 7,189.79 and 2,851.88 is: 3,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.19 : 7,189.79 = 2,851.88 : x
  2. Step 2: Convert to fraction form
    5,210.19/7,189.79 = 2,851.88/x
  3. Step 3: Cross multiply
    5,210.19x = 7,189.79 × 2,851.88
  4. Step 4: Simplify right side
    5,210.19x = 20,504,418.31
  5. Step 5: Solve for x
    x = 20,504,418.31/5,210.19
  6. Step 6: Final answer
    x = 3,935.45

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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.