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Finding the Fourth Proportional to 5,147.12, 7,724.28 and 3,590.84

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Solution

The fourth proportional to 5,147.12, 7,724.28 and 3,590.84 is: 5,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.12 : 7,724.28 = 3,590.84 : x
  2. Step 2: Convert to fraction form
    5,147.12/7,724.28 = 3,590.84/x
  3. Step 3: Cross multiply
    5,147.12x = 7,724.28 × 3,590.84
  4. Step 4: Simplify right side
    5,147.12x = 27,736,653.60
  5. Step 5: Solve for x
    x = 27,736,653.60/5,147.12
  6. Step 6: Final answer
    x = 5,388.77

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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.