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Finding the Fourth Proportional to 4,679.44, 7,019.12 and 1,905.46

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Solution

The fourth proportional to 4,679.44, 7,019.12 and 1,905.46 is: 2,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.44 : 7,019.12 = 1,905.46 : x
  2. Step 2: Convert to fraction form
    4,679.44/7,019.12 = 1,905.46/x
  3. Step 3: Cross multiply
    4,679.44x = 7,019.12 × 1,905.46
  4. Step 4: Simplify right side
    4,679.44x = 13,374,639.61
  5. Step 5: Solve for x
    x = 13,374,639.61/4,679.44
  6. Step 6: Final answer
    x = 2,858.17

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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.