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Finding the Fourth Proportional to 4,918.40, 7,363.20 and 4,342.40

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Solution

The fourth proportional to 4,918.40, 7,363.20 and 4,342.40 is: 6,500.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.40 : 7,363.20 = 4,342.40 : x
  2. Step 2: Convert to fraction form
    4,918.40/7,363.20 = 4,342.40/x
  3. Step 3: Cross multiply
    4,918.40x = 7,363.20 × 4,342.40
  4. Step 4: Simplify right side
    4,918.40x = 31,973,959.68
  5. Step 5: Solve for x
    x = 31,973,959.68/4,918.40
  6. Step 6: Final answer
    x = 6,500.89

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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.