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Finding the Fourth Proportional to 4,679.02, 7,018.84 and 1,391.84

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Solution

The fourth proportional to 4,679.02, 7,018.84 and 1,391.84 is: 2,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.02 : 7,018.84 = 1,391.84 : x
  2. Step 2: Convert to fraction form
    4,679.02/7,018.84 = 1,391.84/x
  3. Step 3: Cross multiply
    4,679.02x = 7,018.84 × 1,391.84
  4. Step 4: Simplify right side
    4,679.02x = 9,769,087.40
  5. Step 5: Solve for x
    x = 9,769,087.40/4,679.02
  6. Step 6: Final answer
    x = 2,087.85

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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.