Home / 5,428.62-7,490.34-4,171.05

Finding the Fourth Proportional to 5,428.62, 7,490.34 and 4,171.05

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Solution

The fourth proportional to 5,428.62, 7,490.34 and 4,171.05 is: 5,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.62 : 7,490.34 = 4,171.05 : x
  2. Step 2: Convert to fraction form
    5,428.62/7,490.34 = 4,171.05/x
  3. Step 3: Cross multiply
    5,428.62x = 7,490.34 × 4,171.05
  4. Step 4: Simplify right side
    5,428.62x = 31,242,582.66
  5. Step 5: Solve for x
    x = 31,242,582.66/5,428.62
  6. Step 6: Final answer
    x = 5,755.16

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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.