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Finding the Fourth Proportional to 4,679.40, 7,019.76 and 1,717.48

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Solution

The fourth proportional to 4,679.40, 7,019.76 and 1,717.48 is: 2,576.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.40 : 7,019.76 = 1,717.48 : x
  2. Step 2: Convert to fraction form
    4,679.40/7,019.76 = 1,717.48/x
  3. Step 3: Cross multiply
    4,679.40x = 7,019.76 × 1,717.48
  4. Step 4: Simplify right side
    4,679.40x = 12,056,297.40
  5. Step 5: Solve for x
    x = 12,056,297.40/4,679.40
  6. Step 6: Final answer
    x = 2,576.46

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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.