Home / 6,428.90-9,643.62-3,144.75

Finding the Fourth Proportional to 6,428.90, 9,643.62 and 3,144.75

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Solution

The fourth proportional to 6,428.90, 9,643.62 and 3,144.75 is: 4,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.90 : 9,643.62 = 3,144.75 : x
  2. Step 2: Convert to fraction form
    6,428.90/9,643.62 = 3,144.75/x
  3. Step 3: Cross multiply
    6,428.90x = 9,643.62 × 3,144.75
  4. Step 4: Simplify right side
    6,428.90x = 30,326,774.00
  5. Step 5: Solve for x
    x = 30,326,774.00/6,428.90
  6. Step 6: Final answer
    x = 4,717.26

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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.