Home / 6,428.80-9,642.75-2,269.15

Finding the Fourth Proportional to 6,428.80, 9,642.75 and 2,269.15

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Solution

The fourth proportional to 6,428.80, 9,642.75 and 2,269.15 is: 3,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.80 : 9,642.75 = 2,269.15 : x
  2. Step 2: Convert to fraction form
    6,428.80/9,642.75 = 2,269.15/x
  3. Step 3: Cross multiply
    6,428.80x = 9,642.75 × 2,269.15
  4. Step 4: Simplify right side
    6,428.80x = 21,880,813.55
  5. Step 5: Solve for x
    x = 21,880,813.55/6,428.80
  6. Step 6: Final answer
    x = 3,403.56

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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.