Home / 5,428.49-7,490.09-3,305.12

Finding the Fourth Proportional to 5,428.49, 7,490.09 and 3,305.12

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Solution

The fourth proportional to 5,428.49, 7,490.09 and 3,305.12 is: 4,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.49 : 7,490.09 = 3,305.12 : x
  2. Step 2: Convert to fraction form
    5,428.49/7,490.09 = 3,305.12/x
  3. Step 3: Cross multiply
    5,428.49x = 7,490.09 × 3,305.12
  4. Step 4: Simplify right side
    5,428.49x = 24,755,617.07
  5. Step 5: Solve for x
    x = 24,755,617.07/5,428.49
  6. Step 6: Final answer
    x = 4,560.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.