Home / 6,428.90-9,643.80-2,730.72

Finding the Fourth Proportional to 6,428.90, 9,643.80 and 2,730.72

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Solution

The fourth proportional to 6,428.90, 9,643.80 and 2,730.72 is: 4,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.90 : 9,643.80 = 2,730.72 : x
  2. Step 2: Convert to fraction form
    6,428.90/9,643.80 = 2,730.72/x
  3. Step 3: Cross multiply
    6,428.90x = 9,643.80 × 2,730.72
  4. Step 4: Simplify right side
    6,428.90x = 26,334,517.54
  5. Step 5: Solve for x
    x = 26,334,517.54/6,428.90
  6. Step 6: Final answer
    x = 4,096.27

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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.