Home / 4,929.80-7,342.39-4,905.95

Finding the Fourth Proportional to 4,929.80, 7,342.39 and 4,905.95

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Solution

The fourth proportional to 4,929.80, 7,342.39 and 4,905.95 is: 7,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929.80 : 7,342.39 = 4,905.95 : x
  2. Step 2: Convert to fraction form
    4,929.80/7,342.39 = 4,905.95/x
  3. Step 3: Cross multiply
    4,929.80x = 7,342.39 × 4,905.95
  4. Step 4: Simplify right side
    4,929.80x = 36,021,398.22
  5. Step 5: Solve for x
    x = 36,021,398.22/4,929.80
  6. Step 6: Final answer
    x = 7,306.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.