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Finding the Fourth Proportional to 3,989.70, 5,984.07 and 1,068.24

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Solution

The fourth proportional to 3,989.70, 5,984.07 and 1,068.24 is: 1,602.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.70 : 5,984.07 = 1,068.24 : x
  2. Step 2: Convert to fraction form
    3,989.70/5,984.07 = 1,068.24/x
  3. Step 3: Cross multiply
    3,989.70x = 5,984.07 × 1,068.24
  4. Step 4: Simplify right side
    3,989.70x = 6,392,422.94
  5. Step 5: Solve for x
    x = 6,392,422.94/3,989.70
  6. Step 6: Final answer
    x = 1,602.23

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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.