Home / 4,287.40-6,431.10-4,028.20

Finding the Fourth Proportional to 4,287.40, 6,431.10 and 4,028.20

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Solution

The fourth proportional to 4,287.40, 6,431.10 and 4,028.20 is: 6,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.40 : 6,431.10 = 4,028.20 : x
  2. Step 2: Convert to fraction form
    4,287.40/6,431.10 = 4,028.20/x
  3. Step 3: Cross multiply
    4,287.40x = 6,431.10 × 4,028.20
  4. Step 4: Simplify right side
    4,287.40x = 25,905,757.02
  5. Step 5: Solve for x
    x = 25,905,757.02/4,287.40
  6. Step 6: Final answer
    x = 6,042.30

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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.