Home / 2,285.21-3,428.58-725.47

Finding the Fourth Proportional to 2,285.21, 3,428.58 and 725.47

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Solution

The fourth proportional to 2,285.21, 3,428.58 and 725.47 is: 1,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.21 : 3,428.58 = 725.47 : x
  2. Step 2: Convert to fraction form
    2,285.21/3,428.58 = 725.47/x
  3. Step 3: Cross multiply
    2,285.21x = 3,428.58 × 725.47
  4. Step 4: Simplify right side
    2,285.21x = 2,487,331.93
  5. Step 5: Solve for x
    x = 2,487,331.93/2,285.21
  6. Step 6: Final answer
    x = 1,088.45

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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.