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Finding the Fourth Proportional to 5,228.74, 7,842.88 and 1,333.24

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Solution

The fourth proportional to 5,228.74, 7,842.88 and 1,333.24 is: 1,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.74 : 7,842.88 = 1,333.24 : x
  2. Step 2: Convert to fraction form
    5,228.74/7,842.88 = 1,333.24/x
  3. Step 3: Cross multiply
    5,228.74x = 7,842.88 × 1,333.24
  4. Step 4: Simplify right side
    5,228.74x = 10,456,441.33
  5. Step 5: Solve for x
    x = 10,456,441.33/5,228.74
  6. Step 6: Final answer
    x = 1,999.80

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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.