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Finding the Fourth Proportional to 3,584.55, 5,376.99 and 987.51

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Solution

The fourth proportional to 3,584.55, 5,376.99 and 987.51 is: 1,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,584.55 : 5,376.99 = 987.51 : x
  2. Step 2: Convert to fraction form
    3,584.55/5,376.99 = 987.51/x
  3. Step 3: Cross multiply
    3,584.55x = 5,376.99 × 987.51
  4. Step 4: Simplify right side
    3,584.55x = 5,309,831.39
  5. Step 5: Solve for x
    x = 5,309,831.39/3,584.55
  6. Step 6: Final answer
    x = 1,481.31

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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.