Home / 5,122.09-7,676.63-2,490.20

Finding the Fourth Proportional to 5,122.09, 7,676.63 and 2,490.20

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Solution

The fourth proportional to 5,122.09, 7,676.63 and 2,490.20 is: 3,732.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.09 : 7,676.63 = 2,490.20 : x
  2. Step 2: Convert to fraction form
    5,122.09/7,676.63 = 2,490.20/x
  3. Step 3: Cross multiply
    5,122.09x = 7,676.63 × 2,490.20
  4. Step 4: Simplify right side
    5,122.09x = 19,116,344.03
  5. Step 5: Solve for x
    x = 19,116,344.03/5,122.09
  6. Step 6: Final answer
    x = 3,732.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.